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SECTION I - 484 GENERAL INFORMATION
Introduction
1.0
'1.1
1.2
General
Page
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-l
System Definition...............l-1
Components: System Description..........I1.2.1
Processor.........................I1.2.2
Power Supply......................I1.2.3
Input/Output
I/O Section..........I1.2.4
CRT Programming Panel.............I1.2.5
Peripherals
.......................
3
4
5
5
6
I-6
Summary. . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . I-7
1.3
SECTION II - INSTALLATION
Introduction
2.0
2.1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-1
2.1.7
2.1.8
System Configuration.................II-1
- Mainframe Code....................IIHardware Configuration............IIProcessor/Power
Supply............IIII-4
0
LED Indicators
....................
0
Memory Protect....................II0
Interface
Connector...............II0
AC Power Connections..............IIInput/Output
(I/O)
Channels.......IIInput/Output
(I/O)
Bus
Connector Cable.................III/O Module Fuses and Bus
Connections.....................III/O Addressing....................II-10
I/O Field Wiring ................
,.11-l
2.2.1
System Installation..................II-12
Mounting Procedures...............II-14
2.1.1
2.1.2
2.1.3
2.1.4
2.1.5
2.1.6
2.2
1
1
2
5
5
6
6
7
9
1
.
SECTION Ill - OPERATION
Introduction
3.0
3.1
3.1.1
3.1.2
3.1.3
3.1.4
3.1.5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . III-1
Important
Machine Concepts...........IIIProgramming Format ................
Controller
Reference Numbers ......
Scan ..............................
Memory Protect....................III....................
Disable/Enable
-i-
2
III-2
III-5
III-5
III-6
6
TABLE OF CONTENTS
(Continued)
Page
3.2
Basic Proqramminq....................III-8
Relays- ............................
Latches ...........................
Extended Logic....................III-11
Timers ............................
Counters ..........................
Cascaded Counters/Timers..........III-14
Arithmetic
Operations.............III-15
Register
I/O......................III-17
Transitional
Contacts.............III-17
Sequencers........................III-18
BCD Convert.......................III-19
Enhanced II Instruction
Set Option ......................
3.2.13
Binary Convert....................III-19
3.2.14
Move Function.....................III-2
3.2.15
Table-to-Register
Move (T+R)......III-2
3.2.16
Skip ..............................
3.2.17
By-Pass I/~.......................III-2
3.2.18
MODBUSCommunication
Capability......................III-2
3.2.1
3.2.2
3.2.3
3.2.4
3.2.5
3.2.6
3.2.7
3.2.8
3.2.9
3.2.10
3.2.11
3.2.12
III-12
III-14
III-19
0
1
III-21
1
2
3.3.1
3.3.2
Use of P180 CRT Programming Panel....III-2
Introduction......................III-2
CRT Display.......................III-2
2
2
4
3.4.1
3.4.2
3.4.3
3.4.4
Programming Instructions.............III-2
Network Controls..................III-2
Relay Contact Controls............III-2
Numerical Entry...................III-2
Entry Controls....................III-2
6
6
8
8
9
3.3
3.4
3.5
III-8
III-11
Use of Model T158 Telephone
Interface..........................fII-3
3.5.1
Description.......................III-3
Operating
Procedure...............III-3
3.5.2
3.6
3.6.1
3.6.2
3.6.3
3.6.4
3.6.5
Model L206 Program Tape Loader.......III-3
Description.......................III-3
Specifications....................III-3
Controls
and Indicators...........III-3
Operating
Procedures..............III-3
Functional
Description............III-4
-ii-
2
2
3
4
5
5
6
7
0
TABLE OF CONTENTS (Continued)
Page
3.7
3.7.1
3.7.2
3.7.3
3.7.4
3.7.5
3.7.6
J474 Communication Interface
MODRUS. . . . . . . . . . . . . . . . . . . . . . . . . . . . III-40
Description
. . . . . . . . . . . . . . . . . . . . . . . III-40
Installation
. . . . ..*...............
III-42
Specification
. . . . . . . . . . . . . . . . . . . ..III-42
Indicators
. . . . . . . . . . . . . . . . . . . . . . ..III-42
Connections . . . . . . . . . . . . . . . . . . . . . ..III-43
Self-Test
. . . . . . . . . . . . . . . . . . . . . . . . . III-46
SECTION IV - TROUBLESHOOTING
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IV-1
Introduction
4.0
4.1
4.1.1
4.1.2
4.1.3
Indicator
Lights .....................
Power Supply ......................
Processor .........................
Imput/Output
Section ..............
Fault
4.2
4.3
4.3.1
4.3.2
Isolation
IV-1
IV-2
IV-4
IV-7
Flow Charts..........IV-10
P180 Error Messages ..................
484 Error Code....................IV-16
Error Messages ....................
IV-16
IV-17
SECTION V - SERVICE CENTER
Introduction
5.0
5.1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v-1
Forms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v-1
SECTION VI - 500 SERIES l/O DEVICES
Introduction
6.0
6.1
6.2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI-1
Discrete
I/O System..................VI...........................
Modules
6.1.1
Register
I/O
4
VI-4
Descriptions............VI-26
SECTION VII - 5470 ADAPTER
7.0
Introduction
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VII-1
-iii-
TABLE OF CONTENTS (Continued)
Page
SECTION VIII - 5471 l/O EXPANDER
Introduction
8.0
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VIII-1
8.1
Connections
and Mounting.............VIII-1
8.2
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . VIII-1
8.3
Electrical
8.4
Indicators
8.5
Addressing . . . . . . . . . . .. . . . . . . . . . . . . . . . . VIII-2
Characteristics...........VIII-1
. . . . . . . . . . . . . . . . . . . . . . . . . . . VIII-2
APPENDIX A - EXTERNAL CABLES..
. . . . . . . . . . . . . . . . . . . . . . A-l
GLOSSARY OF TERMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-l
-iv-
LIST OF ILLUSTRATIONS
Figure
Title
Page
484 Controller
System ..............................
Basic Block Diagram ................................
484 Components .....................................
P180 CRT Programming Panel.........................I-
I-3
I-3
I-4
II-1
II-2
II-3
II-4
II-5
II-6
II-7
II-8
II-9
II-10
II-11
II-12
II-13
II-14
II-15
II-16
Typical
System Layout ..............................
Half-Housing-Configuration.........................IIMainframe Controls
and I.ndicators..................IIMainframe AC Power Connections.....................IITypical
484 with Single I/O Channel................IIProcessor I/O Connection Options...................IITypical
I/O Module.................................IIInput/Output
Module Indicators.....................IIInput/Output
Bus Connections.......................IIAddress Selecting
of I/O Housings..................II-10
Field Wiring in I/O Housing Conduit................II-11
Installation
of I/O Housing into I/O Duct..........Il-14
Processor-Internal
Components......................II-16
Processor with Memory Module Removed...............II-17
Installation
of I/O Modules ........................
Installation
of I/O Module Labels..................II-19
II-2
III-1
III-2
III-3
III-4
III-5
III-6
III-7
III-1
Relay Contact Types ................................
III-2
............................
Mainframe Block Diagram
III3
..........................
Multi-Node
Program Format
Relay Contacts with and without Verticals..........111
- 9
Relay Logic Example................................111
- 9
Assumed I/O Wiring Logic in Figure III-5...........111-10
484 Program Equivalent
to Assumed I/O
1.1I-10
...........................
Wiring in Figure III-6
484 Latched Coil Program...........................III-11
484 Extended Logic Program.........................~~~-+
i
Timer Format . ......
................................
Sample Timer/Counter
Cascaded Logic................III-14
General Format for Arithmetic
Option...............III-15
III-17
Transitional
Contacts ..............................
III-18
Twelve-Step
Sequencer and Equivalent
Circuit .......
III-20
Move Format ........................................
..III-2
2
P180 CRT Programming Panel .......................
III-23
P180 Keyboard ......................................
..III-2
4
General CRT Screen Format ........................
III-25
Typical
Programmed Networks ........................
III-32
T158 Telephone Interface
...........................
Controls
on Telephone Interface....................III-3
3
III-34
L206 Tape Loader ...................................
III-36
............................
Controls
and Indicators
III-41
.....................................
J474 Interface
III-44
Typical
J474 Connections ...........................
I-l
I-2
I-3
I-4
.III-8
III-9
III-10
III-11
III-12
III-13
III-14
III-15
111-16
III-17
111-18
III-19
III-20
III-21
III-22
III-23
III-24
III-25
-V-
6
3
5
5
7
8
8
9
9
II-18
LIST OF ILLUSTRATIONS
Figure
IV-1
IV-2
IV-3
IV-4
IV-S
IV-6
IV-7
IV-8
IV-9
IV-
10
VI-1
VI-2
VI-3
VI-4
VI-5
VI-6
VI-7
m-8
VI-9
VI-10
VI-11
VI-12
VI-13
VI-14
VI-15
VI-16
VI-17
(Continued)
Title
Indicators
on Mainframe ............................
Power Supply - Location of Fuses...................IV.......................
Memory Module with Batteries
Wiring of Batteries................................IVJ471 Expander Installation.........................IVDC Power Lamp Fault Isolations
Flowchart...........IV-11
BATT OK Lamp Fault Isolation
Flowchart.............IV-12
RUN Lamp Fault Isolation
Flowchart.................IV-13
RUN Lamp Fault Isolation
Flowchart
(Continuation
of A from IV-8)....................IV-14
I/O Section Fault Isolation
Flowchart..............IV-15
Page
IV-2
IV-5
3
6
9
B550 115 VAC Output Module Simplified
Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI-5
B550 115 VAC Output Module Terminal
Numbering and Connections........................VI-6
B551 115 VAC Input Module Simplified
Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI-7
B551 115 VAC Input Module Terminal Numbering
and Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI-8
B552 Universal
DC Output Module
(True High) Simplified
Sche,matic.................VI-9
B552 Universal
DC Output Module
(True High) Terminal Numbering
and Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI-10
B553 Universal
DC Input Module
(True High) Simplified
Schematic.................VI-11
B553 Universal
DC Input Module
(True High) Terminal Numbering
and Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI-12
B554 220 VAC Output Module Simplified
Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI-13
B554 220 VAC Output Module Terminal
Numbering and Connections........................VI-14
B555 220 VAC Input Module Simplified
Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI-15
B555 220 VAC Input Module Terminal
Numbering and Connections . . . . . . . . . . . . . . . . . . . . . . ..VI-15
B556 VDC TTL Output Module Simplified
Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI-16
B556 VDC TTL Output Module Terminal
Numbering and Connections........................VI-16
B557 VDC TTL Input Module Simplified
Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI-18
B557 VDC TTL Input Module Terminal
Numbering and Connections........................vI-19
B558 Universal
DC Output Module (True Low)
Simplified
Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI-21
-vi-
LIST OF ILLUSTRATIONS (Continued)
Page
Title
Figure
VI-21
B558 Universal
DC Output Module (True Low)
Terminal Numbering and Connections..............VI-21
B559 Universal
DC Input Module (True Low)
Simplified
Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI-23
B559 Universal
DC Input Module (True Low)
Terminal Numbering and Connections..............VI-23
B577 Analog Input Module Typical
Connections......VI-25
VII-1
VII-2
VII-3
J47O Adapter ......................................
Option Selecter
on J470 Adapter...................VII5470 Block Diagram, External
Connections..........VII-
VIII-1
VIII-2
VIII-3
VIII-4
J471
J471
J471
J471
VI-18
VI-19
VI-20
Block Diagram................................VIIIMounting .....................................
Installation
.................................
Configuration
................................
VII-1
2
3
4
VIII-4
VIII-5
VIII-6
LIST OF TABLES
I-l
Page
Title
Table
Basic
484 Controller
Specifications
................
1-2
II-1
II-4
II-1
II-2
II-3
II-4
C484 Mainframe Code ................................
Summary of Required AC Power .......................
C484 Controller
Installation
Specifications........II-13
I/O Module Colors ..................................
III-1
III-2
III-3
I/O Reference Configuration........................III484 Memory Configuration...........................IIIJ474 Functions .....................................
III-44
VI-1
VI-2
Signal Conditioning
Module Options .................
Input/Output
Module Terminal Assignments ...........
VI-3
VI-3
VII-1
Setting
VIII-1
Address Listings.
of J470 Adapter
Option
Swps................
..................................
-vii-
II-20
VII-2
VIII-3
4
6
SECTION
484 GENERAL
I
INFORMATION
INTRODUCTION
1.0
overview
of
ProgramThe introduction
provides a general
the
MODICON
mable Controllers
(PC) and specific
orientation
to
484.
All topics discussed here are discussed in more detail
in
trees
For information
on family
other sections of the manual.
cables
to
refer
to Appendix A and for information
on external
Appendix B. A Glossary of Terms is included at the back.
1.1
GENERAL
SYSTEM
DEFINITION
device
(PC)
is
a solid-state
Controller
A Programmable
situacontrol
industrial
in
designed to make logic decisions
with
Relays and solid-state
electronics
can be replaced
tions.
a PC.
Outstanding
0
0
0
0
features
of a PC include:
fast responses in hostile
environments.
Reliable,
ladder
diagram
with
Programmable and reprogrammable
language.
indicator
with
diagnostic
Simplified
troubleshooting
lights
at major points.
Easy maintenance with modular replacement.
The MODICON 484 is one of the finest
examples
of
PC techIt is designed to replace control
svstems
of
nology available.
solid-state
Advantages over relays and other
10 to 400 relays.
devices include:
Lower hardware costs.
4 to 20 ms depending on memory size.
Faster scan rate:
Expandable memory in six sizes:
1/4K to 8K.
Expandable Input/Output
(I/O)
with four point modules.
Easier installation.
Retentive
memory for logic and timer/counter
values.
Direct
plug-in
programming devices.
on line programming.
Real-time,
Table I-l
lists
and Figure
troller,
the
I-l
for
specifications
shows the controller
I-l
a basic
system.
484
Con-
Table I-1. Basic484 ControllerSpecifications
Power Requirements:
Standard
115 VAC + 15%, 60 Hz + 150
3 amp- peak
Volt amps (max)
start-up
transient
Optional
115/220 VAC + 15%, 50 Hz 2 5%
3 amp
amps (mat)
150 Volt
transient
(2
peak start-up
amp on 220 V)
Operating
Storage
Ambient Temperature
0°C to 60°C
-4O'C
Humidity
0% to 95%
0% to 95%
Environmental
Dimensions
Requirement:
(non-condensing)
to 80°C
(WXHXD):
Processor
Single I/O
(including
(w/Power
Supply)
15 in. x 20.5 in. x 6.5 in.
(38 cm x 53 cm x 16.5 cm)
5 in. x 32 in. 6 in.
(13 cm x 81 cm x 15 cm)
housing
I/O Duct)
Eight Housings
(One Channel)
40 in. 32 in. 6 in.
(102 cm x 81 cm x 15 cm)
Weight:
Processor
I/O
33 lbs
Supply)
1 lb
Module
(15 Kg)
(0.5
Single I/O Housing
(w/Modules)
15 lbs
Eight Housings
w/Modules & Duct)
136 lbs
Controls
I/O
(w/Power
Kg)
(7 Kg)
(62 Kg)
and Indicators:
CPU
RUN light
POWERon light
RATT OK light
MFNORY PROTECT key
Modules:
Circuit
Terminal
Blow Fuse light
I-2
Voltage
(outputs
light
ONLY)
Figure I-1. 484 Controller
A typical
PC (Figure
Power Supply,
Processor,
r
1
_---PROGRAMMING
I-2)
I/O
four
components:
is divided
into
and a Programming Device.
Section,
1
1
System
>
>
PROCESSOR
I/O
SECTIONS
USER’S
EQUIPMENT
A
USER ’ FIELD
WIRING
TS-80-0002-1
Figure I-2 Basic Block Diagram
1.2
COMPONENTS:
SYSTEM
DESCRIPTION
Each of the four components of a PC are
described
in this section
(Figure I-3).
Peripherals
available
Modicon 484 are also introduced.
I-3
briefly
for
the
TS-80-0002-2
Figure l-3. 484 Components
1.2.1
PROCESSOR
solidThe processor or brain of the
PC is
a completely
Processing
the
Central
called
It
is
sometimes
state device.
the
This
is
the
mainframe.
Unit (CPU) and sometimes called
timer/
and
relays
replaces
actually
PC
which
the
part of
for
expandable
iS
In the MODICON 484 the processor
counters.
of stopper switches.
computational
functions
or for simulation
ladder
relay
The processor is programmed in
The program uses up to ten relay contacts
guage.
diagram
per rung.
lan-
power
The processor operates on DC power furnished
by the
the
prothrought
routed
This
internal
DC
power
is
supply.
entered
When the program is
cessor to operate the I/O Section.
into the processsor
it remains until
changed deliberately
by a
the
Power failure
or power-off
conditions
do not destroy
user.
program.
and
and data
An access port enables entry of instructions
The
most
permits monitoring
of perviously
entered information.
into
the
processor
common method of entering
data or programs
Panel.
P180
CRT
Programming
the
through this port
is
with
this
port
are
a Tape
Other devices that may be connected to
Communication
Interface.
a Telephone
Loader, a Computer, or
simulwhich
allows
with these devices is done via an adapter
taneous operation
with the CRT Programming Panel.
I-4
1.2.2
POWER SUPPLY
the
proThe Power Supply mounts inside the front cover of
(non
It operates on 115 VAC, 6OHz or 115/220
VAC, 50Hz
cessor.
required.
are
No adjustments
or maintenance
interchangeable).
cooling
is
external
NO
A lamp indicates
power-ready
status.
The
required.
circulation
is
free
air
necessary,
although
the
processor;
Power Supply has sufficient
capacity
to operate
used
An expander power supply
is
and 128 outputs.
128 inputs,
to extend the PC/s capability
to 256 inputs and 256 outputs.
1.2.3
INPUT/OUTPUT
(110) SECTION
the
input
A major characteristic
of the 484 Controller
is
connected
to
the
and-output
control
devices that are directly
accompuser wiring
to and from the controller
is
controller.
These housings
are
dehousings.
lished through heavy duty
Each module contains
signed to hold up to eight I/O modules.
A smaller
I/O
housing
either
input or output.
four circuits;
The covered
accommodating up to four I/O modules is available.
the
wireway (I/O duct) enables easy installation
and access
to
wiring.
The modules
are
A'wide variety
of I/O modules is offered.
consolidlv
These
output driving
or input handling circuits.
their
into
structed
units are easily
removed from or
plugged
automatically
contact
is
Once inserted,
electrical
housings.
I/O modules can be remade through plated spring connectors.
field
devices
moved and replaced without removing power on the
There is no need to shut down the system
to
or internal
logic.
replace I/O modules.
diodes
by photo
Each input and output circuit
is isolated
from
affecting
wiring
thus preventing
transients
on the field
required.
The
No periodic
maintenance
is
the internal
logic.
fuses.
output
individual
484 output modules, AC or
DC, have
and outIndicators
on each module show the field
power status
can be loI/O modules and field
wiring
put fuses condition.
cated in any possible
configuration
regardless
of voltage
level.
There are four classes
and the user's equipment:
0
0
0
0
of signals
between
the
484
svstem
Discrete
I/O connections.
and
interfaces,
to
Register
I/O (three-digit
numeric
special
analog
multiplexer;
register
from the
I/O:
purpose modules).
from
the
EIA Adapter,
interface
RS232C peripheral
using the appropriate
MODICON protocol.
connecting
MODBUSCommunication Interface
- Used in
intelor other
communication options to a computer
ligent
device.
I-5
Field
inputs consist of up to 128 discrete
points
or
256
Each has an ON or OFF state.
Each
with the I/O expander unit.
has up to 32 inputs or register
data.
Register
data
is
represented by a decimal number in the range of 0 to 999.
All
discrete inputs are read once during every scan.
1.2.4 CRT PROGRAMMING PANEL
CRT
The Model P180 CRT Programmer (Figure I-4)
is a 5-inch
work site
near
It is easily
carried
to the
in a rugged case.
the
suited
to
the controller.
The entire
CRT unit
is
well
locati_ons
i
n
designed
to
operate
industrial
setting.
It is
and humidity,
where electromagnetic
noise,
temperatures
high
environmental
problems
threatening
mechanical shock, or other
may be present.
TS-80-0003-2
Figure
1-4.P180CRT Programming Panel
The P180 CRT connects directly
to the
484 Controller.
It
provides a simple method to program the processor.
The ladder
diagram language used for programming the PC is
familiar
relay
symbology.
There
are
no required
programmer
languages
to
learn.
The CRT also allows
rapid
system checkout
and
easy,
maintenance.
A delux CRT permits the use of a standard
RS232C printer.
Thus, a hard copy of the ladder diagram contained
in
the
controller
can be generated.
1.2.5
PERIPHERALS
Several standard MODICON support
units
are
available
for
use with the 484 Controller.
These units
provide
a wide
variety
of support functions.
Complete system support
is
always
I-6
The support units use the J470 EIA Adapter for
conavailable.
adapter
allows
a P180
ProThis
nection
to the processor.
grammer and another peripheral
device to
be connected
to
the
controller
simultaneously.
Available
0
0
0
0
0
0
1.3
support
equipment
includes:
communication
with
Interface
for
T158 Telephone
MODICON's service
center.
the
L206 Universal
Tape Loader for local recording
of
user's program.
MODBUS Interface
(J474)
which
allows
plant-wide
or
nation-wide
communications.
I?180 CRT Programmer for entering
user logic.
5470 Communications interface.
J471 I/O Expander for additional
I/O capacitv.
SUMMARY
Programmable controllers
are used in industrial
settings
to
devices.
Conreplace relays and other solid-state
electronic
with
trollers
are faster
to respond to instructions
and operate
easily
programmed with
They are
ladder
maximum reliability.
easier
to
Because they are modular they are
diagram language.
Hardware
space
is
required.
maintain
and install,
and less
They operate in hostile
environments.
costs are lower.
ProA typical
controller
is divided
into four components:
and a Programming Device.
cessor, Power Supply, I/O Section,
operThe processor is the brain of the PC. The processor
SecThe I/O
ates on DC power furnished
by the power supply.
The protion is the controller's
link with the "real world".
the
congramming panel is the main device
used to program
troller.
The MODICON 484 Programmable Controller
is desigend
to
reIt
has
an
expandplace control
systems of 10 to 400 relays.
also
has an expandable
able I/O with four point modules.
It
memory in six sizes ranging from 1/4K to 8K. The P180 Programming Device is connected directly
to the 484.
make the
All of these features
Controller
one of the most up-to-date
I-7/1-8
MODICON 484 Programmable
PC's on the market todav.
SECTION
II
INSTALLATION
2.0
INTRODUCTION
The MODICON 484 Controller
Its circuitry
allows
troller.
gic to be programmed.
Section II describes
formation
necessary for
2.1
SYSTEM
2.1.1.
MAINFRAME
is
a microprocessor-based
relay ladder diagram control
the system configuration
installation.
and gives
conloin-
CONFIGURATION
CODE
several
basic
options.
The 484 is manufactured with
The
variacustomer chooses from six memory sizes,
two power supply
These choices are
reflected
tions,
and three instruction
sets.
in the Mainframe Code shown in Table 11-l.
Table
Code:
11-l. C484 Mainframe
Code
1
C484-XYZ
X represents
Instruction
O-Basic
l-Enhanced
2-Enhanced
Set
I
II
Y represents
Power Supply
5-50Hz
6-60Hz
l15VAC
115VAC
2 represents
Memory Size
l-
2
3
4
5
6
-
1/4K
1/2K
1K
2K
4K
8K
A C484-162,
for example, indicates
a C484 with
an Enhanced
Memory
I Instruction
set, 60~~ 115 VAC Power Supply, and a 1/2K
Size.
2.1.2
HARDWARE
A typical
ure includes
the system.
CONFIGURATION
This
figsystem layout is shown in Figure II-l.
components
of
all
major
mounting dimensions for
should
be mounted vertiFor proper heat flow, all units
heat
Vertical
orientation
allows the fullest
removal of
cally.
mounting
template
A
ful-size
via the heavy-duty
housing fins.
may be purchased from any MODICON sales office.
II-1
Figure 11-l. Typical System
Layout
Another system layout frequently
used is
shown in Figure
This configuration
is referred
to as Half-Housing.
11-2.
The
housing is four I/O modules in the vertical
orientation
and up
to 16 modules in the horizontal
orientation.
2.13
PROCESSOR/POWER
SUPPLY
The latest
techniques
in CMOS semi-conductor
memory with
battery
backup are used in the 484 Controller.
Controller
memory is not affected
when the AC power supply
is
lost
provided
good batteries
are installed
in the unit.
Batteries
can be removed while the system is operating
on primary AC power.
When
loss of primary power occurs, the alkaline
batteries
will
maintain memory for approximately
l-1/2
years.
life
is
Shelf
two
approxiyears.
Lithium batteries
that
maintain
memory for
mately five years are available
as an option.
Their shelf
life
worst
case
is ten years.
Battery
life
is calculated
for
temperature,
and bit configuration.
memory size,
a back panel
for
The processor is mounted directly
onto
other vertical
support.
joined
to
the
is
The power supply
It
may be removed separately.
front door of the processor.
opened.
System operation
is not interrupted
when the
door
is
The internal
components of the processor and power supply
may,
therefore,
be accessed
without
system.
System
halting
the
completely
operation
is halted only when the
is
power supply
halted.
Table II-2
summarizes the AC power requirements.
II-2
TS-80-000 14-2
Figure 11-2. Half-Housing
II-3
Configuration
Table 11-2.
Summaryof RequiredAC Power
Normal Voltage:
115V RMS + 15% (loo-130v
220V RMS '7
- 15% (187-265V
Standard
Optional
Transient
Voltage
(Standard):
115V RMS + 30% (80-150V
115V RMS T
- 1.00% (0-200V
Max. 10 seconds
Max. 17 m set
Transient
Voltage
RMS)
RMS)
(Optional):
220V RMS + 30% (160-3OOV RMS)
220V RMS z 100% (O-400V RMS)
Max. 10 seconds
Max. 17 m set
Line
RMS)
RMS)
1OOV max 500 usec duration,
(0.5% max duty cycle)
Spikes:
Frequency:
60 Hz + 5% (57-63 Hz)
50 Hz -7 5% (47.5-52.5
Hz)
Standard
Optional
50 Volt-amps min
150 Volt-amps
max (depending
and peripheral
deupon I/O
vices connected)
Normal Load:
Recommended Distribution:
Transformer
500 Volt-amps
(fuse
secondary
at 5 amps)
(3 amp peak ON
transient)
On the front of the processor power supply
unit
are
three
LED indicators,
a memory protect
lockswitch,
an interface
connector,
and AC power connections
(Figure
They are
as
II-3).
follows:
0
LED Indicators
The three
LED indicators
The power supply:
The controller:
The batteries:
II-4
show proper
operation
POWER
RUN
BATT OK
of:
-S-80,.0005-2
Figure 11-3.Mainframe Controls and Indicators
0
Memory Protect
user
logic
The MEMORYPROTECT lockswitch
protects
the
lockswitch
is
in
from being changed or lost when the
normal
Items that must change during
the ON position.
the
operation
of
operation
are not included
in
the
MEMORYPROTECT lockswitch.
0
Interface
Connector
The connector next to the indicators
is
used to
concontroller.
P.180
the
nect the auxilliary
devices to
this
recepCRT Programmer is connected
directly
to
auxilliary
devices.
no other
tacle when used with
this
connected
to
when
Adapter J470
is
receptacle
additional
peripheral
devices are required.
II-5
0
AC Power Connections
Below the Mainframe Controls
and Indicators
is
supplied
AC power is
minal board to which
11-4).
a ter(Figure
TS-80-0008-2
Figure 11-4.Mainframe AC Power Connections
the
power supply
Voltage sensing, circuitry
is provided in
If
the
AC
power
is
to detect out-of
tolerance
line voltages.
processor
may
the
not within
the specifications
(Table II-2),
when
restored
Operation
will
be automatically
stop operating.
one-scan
delay
There
will
be
a
AC power is within
tolerances.
this
During
after
a failure.
in restoring
processor operation
time the processor goes through its power-up sequence.
2.1.4 INPUT/OUTPUT (l/O) CHANNELS
Each
channel.
All 484 Controllers
communicate with an I/O
points
channel has a maximum of 128 input points and 128 output
points
The system can be expanded to 256 input
(Figure 11-5).
Instrucand 256 output points with the use of the Enhanced II
tion Set and a Model 5471 Expander.
II-6
‘
rs-80~
QOO7-2
Figure 11-5. Typical 484 with Single I/O Channel
(Figure
modules
Specific
I/O circuitry
is provided on I/O
This
circuitry
converts
various
voltages
to
input/out11-5).
put signal levels
compatible
with the
processor.
Input/output
modules have four circuits
each which must be used as either
all input or all output.
The modules are installed
in T/O housings
which
accomodate
up to eight modules of either
Usually,
eight
housings
type.
are connected to a processor making one complete channel.
2.1.5
INPUT/OUTPUT (l/O) BUS CONNECTOR CABLE
The I/O Bus Connector Cable is connected
to
the
processor
Processor
board
connection
locations
and to the I/O channel.
are found on the right
and left
top of
the
processor
board
(Figure 11-G).
L
Connections on the I/O
made on intermediate
channel
are
These
connections
connectors on each housing
(Figure
II-7).
are shielded
in an I/O duct which mechanically
connects the
I/O
eight
discrete
housings
section
to the processor.
up to
I/O
can be connected to a single bus cable.
II-7
I/O
I/O
CON1
CONNECTK)N
/
\
I/O/
CONNECTION
Figure 11-6.Processor II0 Connection Options
TS-80-0009-2
Figure 11-7.Typical II0 Module
II-8
2.1.6
l/O MODULE
FUSES AND BUS CONNECTIONS
fuses
All output circuits
(AC or DC) have field
replaceable
The blown-fuse
indicator
is
viewand a blown-fuse
indicator.
There
is
one
able from the front of the module (Figure 11-8).
To replace fuses
the module
blown-fuse
indicator
per circuit.
Fuses
located
on the
are
must be removed from the housing.
Figure
II-9
shows bus connections
left
side of the module.
also viewable from the front of the module.
FUSE
O
‘ R
TS-80-001 o-2
Figure
11-8.
Input/Output
Figure 11-9. Input/Output
Module
Indicators
Bus Connections
2.1.7
l/O ADDRESSING
Addressing is done within
the channel
four
the top of each housing is a set of
the housing (Figure II-IO).
At
at each housing.
switches
to
address
I/O HOUSIN(
ADIIRESS
SEI,ECTION
TS-80-0012-2
Figure 11-10.Address Selecting of II0 Housings
Any housing
can
address.
One switch is closed to select
Within a housing, the
eight
have any address from one to four.
However,
since
modules can be of any type, input
or output.
posithere are a maximum of eight housings and only four index
tions,
two housings can have the
same address
selected.
Any
two housings with the same address must have I/O
configuration
Thus,
the
in
which are opposite
from each other.
top module
if
the
housings
one must be an input and the other an output
are addressed the same. The same is true for every module POSition
in the housing pair.
A channel with four I/O housings can be addressed
one to
four and I/O modules may be inserted
in any order.
There is
no
II.-10
restriction
housings,
previously
relative
to the mixing
of
voltages.
Beyond
each housing must contain
the exact
opposite
of
similarly
addressed housing.
four
the
2.1.8 l/O FIELD WIRING
Field wiring can be instaLled
on the
housings
either
I/O
installed.
However,
are
for
before or after
the I/O modules
field
wiring
be
the
user convenience,
it is recommended that
The I/O housing address can be
installed
prior
to I/O modules.
modules
fFigure
the
readjusted
at any time
by removing
I/O
11-11).
Figure II-1 1. Field Wiring in II0 Housing Conduit
II-11
2.2
SYSTEM
INSTALLATION
system
The various parts of the MODICON 484 Controller
packaged in separate containers
as follows:
are
Contents
Container
C484
Processor
unit
R545/546
Discrete
housings
I/O
Housing
per box).
(up
to
four
B547/548
Register
housings
Housing
I/O
per box).
(up
to
four
5540/5541
Input/output
BXXX
Modules
Input/output
(up
modules per box; 4, 8, or 12
carton).
J 471
Discrete
B571/570
Register
Multiplexers
multiplexers
per box).
J470
EIA Adapter.
I/O
with
power supply.
Duct with
I/O
cable.
four
to
boxes per
Expander.
(up
to
four
surThe 484 Controller
is easily
installed
on any vertical
Each unit
has
face capable of sustaining
its specified
weight.
mounting
shows a typical
holes for
mounting.
Figure
II-1
wall
prior
to
bolt-hole
This may be used to mark the
plan.
left
of
drilling.
Input/output
housings can be mounted to the
below
the
the
processor,
or
the processor,
to the right
of
processor.
A maximum of two locations
may be used.
Regardless of the location
of mounting, no more than 32 inthe
processor
put and 32 output modules can be connected
to
Table
II-3
summarizes
the
unless a J471 Expander is also used.
installation
requirements
of the 484 Controller.
II-12
Table 11-3.
C484ControllerInstallationSpecifications
Power Requirements:
Standard
115 + 15%, 60Hz + S%
150 Volt amp (max).
3 amp peak start-up
transient
(2 amp on 220V).
Optional
115/220 VAC + 15%, 50Hz + 5%
1SO Volt amps (max).
3 amp peak start-up
transient
(2 amp on 220V).
Environmental
Requirement:
Ambient
O'C to 6O'C.
Temperate
0% to 95% (non-condensing).
Humidity
Dimensions
(WxHxD):
Processor
b
‘
(w/Power
15 in. x 20.5 in. x 6.5 in.
(380 mm x 520 mm x 165 mm).
Supply
Single I/O Housing
(One channel)
5 in. x 32 in. x 6 in.
(130 mm x 815 mm x 155 mm).
Eight Housings
(One channel)
40 in. x 32 in. x 6 in.
(1020. mm x 815 mm x 155 mm).
Jeight:
Processor
I/O
(w/Power
Module
Supply
33 lbs
1 lb
(0.5
Single I/O Housing
(w/Modules)
16 lbs
Eight Housings
(w/Modules & Duct)
136 lbs
II-l3
(15 Kg).
Kg).
(7.5
Kg).
(62 Kg).
2.2.1
MOUNTING
PROCEDURES
one
Figure II-5
shows a typical
system mounted with
each with eight I/O modules.
channel of eight housings,
Mounting
is suggested
used.
Step
1.
2.
3.
4.
hardware
the 5/16
is not provided with the
controller.
bolts
(24UNF)
machine
inch
x l-1/2
full
It
be
Procedure
place
at
Select type 5540 I/O Duct and mount in
top of mounting surface.
Halt duct in place.
Do
NOT install
cover.
Select one I3545 or 546 I/O housing.
the
Insert
the housing into the bottom
of
duct.
duct
to
supKeyhole slots are available
in the
port the I/O housings (Figure II-12).
Bolt the I/O housing in place.
CAUTION
THE KEYHOLE SLOTS ARE NOT CAPABLE OF SUPPORTING FULL
I/O MODULES. SECURE THE HOUSING PRIOR TO WIRING AND
INSERTING I/O MODULES.
TS-80-0014-2
Figure11-12.
Installation of II0 Housing into II0 Duck
II-14
Step
-5.
6.
7.
Procedure
--2 through 4
Repeat steps
for
all
remaining
I/O
housings.
Start bottom bolts for mounting of processor.
Remove end plate from processor where I/O duct
is
to be connected (Figure
Place
processor
11-6).
with
onto bottom two bolts
and secure
two
top
bolts.
NOTE
To reduce weight of processor to 12 pounds, remove the
Disconnection
power supply.
and reconnection
procedures for Power Supply are found in Sectio IV ,of
this
manual.
8.
If I/O housings are to be installed
at the
bottom
of the processor,
perform steps 2 through
4 for
these two housings.
I/O duct is built
into
bottom of processor.
To expand I/O
duct
to
three
housings,
use Underduct Expander 5566-003.
9.
If I/O housings are to be placed on both sides
of
the processor,
repeat steps 1 through 5 for
opposite side.
10.
Model B547 and B548 T/O Housings
are
used to
analog
or multimount register
modules,
type
These housings can be placed at any duct
plexer.
number of
position.
This does not
reduce
the
discrete
I/O housings.
Follow steps 2 through
4
for installation
of register
type modules.
11.
Obtain I/O bus cable shipped with I/O duct.
Connectors are spaced about five inches apart
except
the ends.
from
The end connectors are 1S inches
cable(s)
into
connector.
Place
the
closest
duct(s)
with widely spaced connector at
the
profacing
Red side of
cable
is
the
rear
cessor.
duct.
12.
Open processor and locate I/O
connectors
(Figure
Route I/O bus cable(s)
to I/O
connectors
11-13).
and insert
(Figure 11-14) with red side
of
cable
Close processor.
facing sides of processor.
13.
bus
connectors
on I/O
insert
Within I/O duct,
board
edge
connector
cable into printed
circuit
at top of each I/O housing (Figure 11-9).
II-15
POWER, SUPPLY
I/O CONNECTORS
TS-80-0015-2
Figure 11-13.Processor - Internal Components
NOTE
Extra connectors on I/O bus cable can be left
for future
expansion or maintenance purposes.
Step
14.
in
duct
ProcedureIf the J471
I/O Expander is to be installed,
remove the end plate from an I/O duct.
The expander can be located anywhere near the
end of
the
I/O duct that the
optional
ten-foot
used
cable
with the
expander
will
reach.
Mount expander
following
procedures used in
steps
6 and 7 to
mount processor.
Route cable to open end of
I/O
duct and insert
end into I/O duct.
Secure end plate provided as part of cable to
end
to conof I/O duct and connect
expander
cable
nector I/O bus cable.
Expander end of W513 cable
Connection
secured
to
is
similarly
expander.
within
expander is
side
of
installed
with
red
cable to sides of expander.
CAUTION
MISARTICULATION MAY RESULT IN DAMAGETO CONNECTOR, J471,
OR BOTH.
15.
Secure cover of I/O
duct
onto duct with sharp blow.
II-16
by
pushing
cover
Figure 11-14. Processor
Step
-16.
with Memory
Module
Removed
Procedure
---If J470 EIA Adapter is to be used, mount the
whenever
processor
along-side
I/O
adapter
botconnection
is NOT made (left,
right
or
attached
to
cable
Insert
three-foot
tom).
concommunications
processor
adapter into
nector
(Figure 11-4).
NOTE
Field wiring can be installed
or altered
convenience,
For user
ules installed.
mended that the field
wiring be installed
installing
of the I/O modules.
17.
with I/O
modrecomit
is
the
prior
to
side
Install
field
wiring through conduit on left
screwConnect
to
of I/O housing (Figure 11-11).
capable
of
is
Each terminal
down terminals.
(Model
(Model
545)
or
four
accomodating eight
terminals.
eight
each with
I/O
modules,
546)
Terminal one is at top of each module.
II-17
Procedure
---_
each I/O
Prior to installing
the upper module in
address
must
be estabhousing
the
housing's
left
of
the
Behind a small opening
to
lished.
dip
the top of the I/O module is a series of four
switches
these
One of
switches
(Figure II-lo).
conthe
wiring
must be depressed (moved toward
duit)
to establish
the address of the housing.
NOTE
one
only
channel,
the
For proper operation
of
I/O
are
setwo
switches
If
switch must be selected.
either
of
channel
with
all
housings
in
that
lected,
these two addresses will
respond in parallel.
Step
-18.
NOTE
can have same adUp to two housings in one channel
with
same address,
Between two housings
dress.
I/O
bottom
with
from
top
to
modules must be installed
exact opposite
inputs versus outputs.
PINS
TS-80-0017-2
Figure 11-15.Installation of II0 Modules
II-18
Procedure
---_
After
addressing
I/O
housings,
insert
I/O
modules.
I/O modules are inserted
straight
into
I/O
housing using large guide pins (Figure
11-15)
to
align module into rear
connector.
Once engaged
at rear, module is rotated
towards wiring
conduit
to engage field
terminals.
NOTE
allow
inRed slide .lock can be either
up or down to
sertion.
removal
and
It must be down to allow module
up to lock module in place.
Step
-19.
ClRCUlT lDENTlFlCATlON
STRIP
/
COLOR
LABELS
MATCHING
I/O MODULES
TS-80-0018-2
Figure 11-16,installation of I/O Module Labels
20.
After I/O modules are inserted
the
housing
identification
strip
can be inserted
(Figure
II-16).
This plastic
strip
covers
recessed
field
terminals along entire
height
of
housing.
Space is
provided on this strip
for color coded labels
to
identify
various I/O modules (Table 11-4) as well
as user identification
of field
circuits.
21.
AC power is connected to
the
processor.
Finally,
Single phase, three
wire
(ground,
neutral,
and
Electhot) connections
are made (Figure
11-4).
and rerical
loads are summarized in Table II-4
defined
in
are
characteristics
quired
voltage
Table 11-3.
II-19
Table 11-4. l/O Module Colors
Module
B550
B551
B552
B553
B554
B555
B556
B557
B558
B559
B560
B561
*Pantone
PMS* Code
Type
VAC Output
115 VAC Input
DC True High Output
DC True High Input
220 VAC Output
220 VAC Input
5V TTL Output
5V TTL Input
DC True Low Output
DC True Low Input
120 vdc Output
120 Vdc Input
115
Matching
System
II-20
199
197
286
284
151
1.49
259
264
314
311
307
305
1
Color
Red
Pink
Dark Blue
Light Blue
Orange
Melon
Violet
Light Purple
Turquoise
Slue
Blue
Blue
SECTION III
OPERATION
INTRODUCTION
3.0
Section III
provides
information
the MODICON 484 Controller.
for
the basic
operation
of
this
manual,
the
and II
of
As discussed in Sections
I
controller.
MODICON 484 Controller
is
a microprocessor-based
logic
to
be
Its circuitry
allows relay ladder diagram control
The basic
programmed and used in various
industrial
settings.
shown in Figure
relay
contact
element of programming is the
The 484 Controller
may replace operations
which use reIII-l.
lay contacts.
-i
xxxx
9
I
NORMALLY
NORMALLY OPEN
CONTACT
CLOSED
TS-80-0003-1
CONTACT
Figure 111-l.Relay Contact Types
The C484 is composed of the Processor,
the I/O Section,
The most commonly
Power Supply, and a Programming Device.
programming device is the P180 CRT Programming Panel.
Section
0
0
0
0
0
III
includes
the following
the
used
information:
the
reader
to
enable
Important
machine concepts
to
484
Controller
the
understand later
descriptions
of
functions.
functions
(relay,
Detailed
discussions
of basic logic
and counters).
timer,
available
functions
optional
Detailed
discussions
of
with enhanced capabilities.
Panel
Instructions
for using the P180 CRT Programming
for entering
or altering
stored logic and other data.
the
J47O
Tapeloader,
Instructions
for using the L206
and the T158 Telephone Interface.
EIA Adaptor,
III-1
3.1
IMPORTANT MACHINE CONCEPTS
3.1.1
PROGRAMMING FORMAT
operation
by means
The 484 system controls
user equipment
The CPU
processor
(CPU) memory.
of a program stored in the
the
I/O
Secprogram is communicated to the outside world via
each other
The CPU and the I/O Section communicate with
tion.
shown
This communication is
via the 50 Conductor Ribbon cable.
in block diagram form in Figure 111-2.
elements
in
The multi-node
format allows up to ten program
diagram.
Up to
seven of
each horizontal
rung of the ladder
conof
relay
these rungs may be combined to form a network
Other
program
elements
such
as
timers,
counters
and
setacts.
seven
may have up to
Each network
quencers may be entered.
right
The coils are automatically
placed on the extreme
coils.
buildThe network is the basic
of the network (Figure 111-3).
is
defined
as a
ing block of the ladder diagram program.
It
seven
rungs.
group of program
elements
compromising
one to
Each rung has up to ten connected elements.
,
>
USER
LOGIC
PROGRAM
I/O
SECTION
TS-80-0004-1
Figure 411-2.Mainframe Block Diagram
The quantity
of networks or logic elements that may be entered depends upon the memory size of the controller
being
used
and the complexity
of each network.
Each program
element
uses
two words of memory, as does each coil.
This
format
allows
very efficient
memory utilization
since each word is eight
bits
Efficiency
increases
as the
programmer's
efficiency
in
long.
programming increases.
The basic element of programming is the relay
mally open or normally closed (Figure 111-l).
III-2
contact,
nor-
MAX.
I
.
LEFT
LEG
10 ELEMENT%
-3
COILS
I
ABCDEFGHI
T
MAX
7
RUNGS
RIGHT
LEG
J
ANY
CONTACTS,
MIX OF RELAY
TIMER,
AND ARITHMETIC
COUNTER,
ELEMENTS
MAX. 7 COILS
(ANY REFERENCE,
ANY ORDER)
TS-80-0005-1
Figure 111-3.Multi-Node Program Format
Below each contact
is a four
digit
number that
reference
to
Controller
(Refer
controls
the power flow of the contact.
section.)
Within
a
Reference Numbers discussion
later
in this
network, power flow is allowed from left
to
right
or
up and
down.
to
left.
When
It
is never allowed to flow from right
power
is
indicated
properly
displayed
on the P18O CRT Screen,
images as
for all relay contacts
by intensifying
these contact
power is passed from left
to right.
Model P180 Programming Panel
ber of words used for previously
displays
in real
entered logic.
time
the
num-
Data entered into the controller
is
entered
directly
into
If power
is
interrupted
before
the memory of the controller.
is
completion
of the programming, whatever data already entered
assemNo
additional
processing
is
required,
such
as
retained.
Data entered is sorted for use by the controller.
bly of data.
deleted,
Networks can be totally
or partially
changed, added or
i.nterThis
does not
at any time with the Programming Panel.
coil
Any input or output
rupt the controller's
scan.
may be
disable
feathis
tested by simulating
inputs or outputs with
(Refer to Disable/Enable
discussion
later
in
this
secture.
tion.)
able
Pre-formatted
through your
ladder diagram forms (Form #484-D)
local MODICON sales offices.
III-3
are
avail-
3.1.2
CONTROLLER REFERENCE NUMBERS
Four-digit
reference
numbers are used to build user's
logic
throughout
the proqramming of any 484 Controller.
These
references are divided
into two broad categories:
discrete
and reused for
individual
Discrete
references
are
items
gisters.
that can be ON or OFF.
These
items
include
limit
switches,
relay contacts,
motor starters,
relay
coils,
and
pushbuttons,
solenoid valves.
Register
references
are used to
store
numervalues,
and the
ical values such as counters,
timers,
analog
like.
All register
references
are three BCD digits
long
(maximum 999).
Only five types of references
are required
to program a 484
Any specific
reference
can be used as many times
Controller.
as needed by a particular
application.
There
are
no limits
other than memory availability.
References
are
identified
as follows:
OXXX-coilsjdiscrete
outputs
lxxx-discrete
inputs
2XxX-sequence steps
3XxX-input
registers
4XxX-holding
registers/
output registers
Available
only with
enhanced capabilities
The address of each I/O housing (Section II of this
manual)
establishing
is very important
in
references.
Table
proper
III-1
defines
the exact reference
for each I/O module
installed
in channel one.
Similar
numbering
is
used for
channel
two,
with each reference
increased
by 128.
3.1.3
SCAN
interThe 484 Controller
examines (solves)
each network of
sequence.
Network
connected logic elements in their
numerical
This
is
One is the first
network to be solved on each scan.
available
all
followed
by network Two, Three and so on until
network
The controller
then goes back to
networks are solved.
This
solving
each network.
One and solves it and continues
typically
from
fixed scanning occurs at a very
rapid
speed,
the
The
scanning
begins
from
four to 20 milliseconds
per scan.
removed.
time power is applied to the processor until
power
is
solved
by columns
Within each network, logic elements are all
located,
are
from the left
rail
to the right
rail
where
coils
and from top to bottom within
each column.
The result
of each network scan is
It makes no
all following
networks.
state
or
coil
result
is a change in
order
Networks are solved in
value.
quence number and not by the reference
coil.
III-5
immediately
available
to
this
difference
whether
numerical
in
a change
numerical
setheir
of
to
any
number assigned
The time
All inputs and outputs are updated once per scan.
the
netfrom solving any individual
network on one scan until
time"
work is solved again on the next scan is called
the "scan
depending
upon the
varies
The scan time
of the controller.
increase
with
Typical
scans
amount and type of logic entered.
memory size (Table 111-2).
Table 111-2.484 Memory Configurations
Model
484
Typical
Memory Elements
(8 Bit
(Contacts
(Words) & Coils)
Maximum I/O
Inputs
Internal
coils
Balding
Reg.
Typical
Scan Time
(M Set)
Outputs
01
256
100
64
64
64
62
4
02
512
200
64
64
64
62
6
03
1024
400
128
128
128
126
8
04
2048
800
192
192
192
190
12
05
4096
1600
256
256
256
254
20
06
8192
3200
256
256
256
318
40
3.1.4
MEMORY PROTECT
The 484 Controller
is provided with a Memory Protect
hardaccidental
or
unauthorized
ware feature
designed
to prevent
changes to the memory. When the MEMORYPROTECT keylock
switch
(Figure 11-3) is placed in the ON position,
the
user's
logic
Programcannot be altered
by any external
device,
such as the
Inor Computer
ming Panel, Tape Loader, Telephone Interface,
terface..
Thus, by placing MEMORYPROTECT ON and removing
the
Panel
to
Programming
key, maintenance personnel can use the
changes.
make unauthorized
monitor the system but they cannot
Only specific
personnel who are provided access to the
key can
change the system.
The Memory Protect
feature
does not protect
those
that normally change such as registers
and I/O status.
3.1.5
elements
DISABLE/ENABLE
built-in
feature
in
all
The Disable
function
is
another
the
checkout
and mainThis feature
simplifies
controllers.
The Disable
status may be changed
tenance of a control
system.
coil
selected
only when the MEMORYPROTECT is OFF. Any logic
III-6
by the CRT cursor may be disconnected
from its logic by depresthe
coil
was
sing the DISABLE pushbutton
(Figure 111-17).
If
the
coil
will
remain
OFF when the pushbutton was depressed,
remain
ON.
To re-enable
a
If the coil was ON it will
OFF.
logic coil,
the DISABLE pushbutton is depressed
a second time
while the cursor is under that coil.
When DISABLE is operating
the coil
disabled
is
no longer
user
via
the
controlled
by the operator
or
CRT Programming
Panel.
The coil can be toggled ON/OFF/ON/OFF
by consecutivelv
depressing
the FORCE pushbutton
(Figure 111-17).
When disabled,
the logic coil,
all references
to
this
coil
driven
from the
in the ladder diagram, and any outputs
coil
Internally
will
be affected
by the Disable
function.
programre-establish
med logic remains in the controller
and will
control when the coil is
enabled.
The internal
logic
is
completely
by-passed for the coil because of the DISABLE function.
until
changed
The disable
status for any coil is permanent
by a programming device.
New networks can be displayed,
other
MEMORYPROTECT turned ON, or
coils disabled,
power interrupted,
any other change made to the system but the disable
status of
a
coil does not change.
A programming
device
must be used to
change the disable
status of any coil.
CAUTION
THE USER MUST TAKE CARE NOT TO CREATE UNSAFE CONDITIONS WITH MACHINE OPERATIONS BY USING THE DISABLE
FUNCTION. ALL COILS DISABLED SHOULD BE RETURNED TO
THEIR ORIGINAL STATE PRIOR TO REMOVING THE DISABLE
FUNCTION.
Discrete
inputs can also be disabled
in a manner similar
to
is
placed
in
the
reference
The selected
input
logic coils.
inarea by the GET command. Then the cursor is placed on the
This
action
reput and the DISABLE pushbutton is depressed.
world
real
and assigns
the
moves control
of that input from
Panel.
via
the
CRT
Programming
that control
to the operator
logic
this
that
uses
The input can be forced ON or OFF. All
discrete
input will
now respond to the disable
status
and not
the real world.
The disable
status is permanent and may be altered
only
bv
programming devices with MEMORYPROTECT OFF. At any one time,
as many logic coils and discrete
inputs as desired can be disabled each ON or OFF.
NOTE
all
Since the disable
status is permanent, a record of
disabled
logic coils and inputs should be kept so that
show
A ladder listing
will
they can be enabled later.
the disable
state of any logic or input.
III-7
verify
the
proper
may be used to
The disable
function
inputs.
Each output
is
wiring and operation
of all discrete
displayed
in‘a network on the CRT Programming
Panel
and then
disabled.
The coil can be cycled ON/OFF/ON/OFF and so on,
so
St
is
observed.
that the operation
of the discrete
device is
enabled
before
the
recommended that the logic coil checked be
undesirable
disable
statuses
next output is tested to prevent
from occuring.
to
operate
profails
If an input such as a limit
switch
the
its effect
can be temproarily
simulated
by disabling
perly,
This
is
input and forcing
it to the required
state,
ON or OFF.
input
is
preventing
the
control
the
particularly
useful if
system from functioning.
3.2
BASIC PROGRAMMING
capabilitv
of
the
All 484 Controllers
are
provided
with
function
of
the
relays,
simulating
being programmed and of
basic
done on the
timers,
and counters.
All programming
is
format of up to ten elements in each horizontal
row or rung and
form a network.
up to seven of these rungs connected together
seven
rungs
or
up to
two
A network can be a single
rung,
elements
of
the
There must be some connection
between
rungs.
This connection may be as simple as the left
leg
of
each rung.
seven coils.
the ladder diagram.
Each network may have up to
the
right
of
Coils are shown on the CRT screen at the extreme
rungs of the network.
number
These coils may be assigned
logic
coil
any valid
numbers can be used
available
in the controller.
Logic coil
storonly once.
The quantity
of logic coils,
discrete
inputs,
(Table
depends
upon memory size
age locations
and the like,
111-2).
3.2.1
RELAYS
The basic programming element
possible
relay contacts
available
is
contact.
the
relay
are shown in Figure 111-Q.
The
occurs
Contacts cannot be placed
vertically.
Power flow
only form the left
leg towards the right
or vertically
up or
down. Power flow is not
the
reverse
direction.
possible
in
the
controls
Below each contact is
a reference
number that
power flow of that contact.
III-8
Without
Normally
Open:
Normally
Closed:
With Vertical
Vertical
-It-
-It-T
TS-80-0008-1
+k-
Figure 111-4.Relay Contacts
With and Without
Verticals
into
divided
references
Logic coils
(0XxX references)
are
comthat can be used to control
discrete
outputs or to provide
pletely
internal
references
as follows:
Output Coils
Internal
Coils
0001-0256
0258-05.12
NOTE
Internal
coil 0257 is an internal
indicator
of
battery
voltage
This reference
is ON as long as the
voltage.
retention
of
in the batteries
is sufficient
to ensure
their
capacity
reduce
memory. Whenever the batteries
to a minimum level coil 0257 will
de-energize
and the
This
is
a
BATT OK LED will
extinquish
(Figure 11-2).
be able
warning level only.
The batteries
will
still
AC
to maintain memory for at least seven days without
power.
Any output or internal
logic coil can be used as a coil
only once.
References
to contacts
controlled
by a coil
can be
used as many times as required.
There is no limit
to how many
times any reference
is used in a program.
coils
output
that
are not used to drive discrete
outputs
can still
be used as
coils
in programming.
Therefore,
any unused output
coils
can
be used for internal
functions
exactly
as internal
coils
are
used.
An example of Relay Logic is shown in Figure 111-5.
PERMISSIVE
SAFETY
TS-80-0007-1
Figure 111-5.Relay Logic Example
III-9
If the logic
(Figure 111-5) was implemented in the 484 Concirinput
to
troller
the control
elements must be connected
assigned.
outputs
and
the
I/O
configuration
Any
cuits
in
may
be
used.
level
voltage
the
proper
available
inputs of
and
assignments
assumed input
the
illustrates
Figure III-6
the
operate
assigned
to
Output
number
12
is
wiring details.
conthe
The internal
logic programmed into
external
device.
troller
may be seen in Figure 111-7.
1006
0
1010
SAFETY
1
l-0
1027
OVERLOAD
TS-80-0008-l
ASSUMED INPUT
CONNECTIONS
ASSUMED OUTPUT
CONNECTIONS
Figure 111-6.Assumed II0 Wiring Logic in Figure Ill-5
TS-80
Figure 111-7.484 Program Equivalent
To Assumed I/O Wiring In Figure Ill-6
3.2.2
LATCH ES
Any logic coil can be latched
so that it is returned
to
its
previous state
(ON or OFF) after
a power failure.
This is
similar
to a latching
relay.
Therefore,
if a latched
coil
is
ON
and power is lost,
it will
return to ON state
when power is
restored
regardless
of how long the power was off.
If the
coil
was OFF, it will
remain OFF when power is restored.
All
logic
coils
that are not latched will
be de-energized
when power iS
restored.
All logic coils are latchable.
If the logic coil in Figure
III-7
were latched
it would be programmed as such and displayed
on the CRT Screen (Figure 111-8).
,0019-2
Figure
3.2.3
111-8.
484 Latched Coil Program
EXTENDED LOGIC
If more than ten elements are required
in a rung to- satisfy
may be used to
coil
a complex control
function,
an internal
this
coil
A contact referenced
to
represent
a partial
result.
network.
Addiis then placed as the first
element in another
The coil
tional
contacts
are entered into the second network.
the
reof the second network can be an output that represents
elements
or
an internal
sultant
logic of up to 19 series
of
number of
the
The only limit
to
coil for further
extension.
times the logic can be cascaded like this is established
by the
with
Internal
coils
can
be
used
memory size of the controller.
to
be
logic
up to ten elements to represent
a single block of
logic
may
be
An
example
of
extended
repeated in the program.
seen in Figure 111-9.
III-11
TS-80 -002 1-2
Figure 111-9.484. Extended Logic Program
3.2.4
TIMERS
Timers can be placed anywhere in a network where
sufficient
space exists.
Timers are built
vertically
and require
two elements, one on top, the other on the bottom (Figure 111-10).
CONTROL -1
‘;y;E(
I
RESET
TXXX
I-
OUTPUT
I
CURRENT
TIME
OUTPUT
TS-80-0009-1
Figure 111-10.Timer Format
Within all
484
Controllers
are
three
crystal-controlled
clock signals
that drive all timers.
Any timer can be programmed to respond to either
the second clock,
l/10-second
clock,
or l/100-second
clock.
There is no limitation
on which
or
how
many timers are referenced
to any of the three clock signals.
III-12
There are two
to the left
of the
timers accumulate
is reset to zero.
ceives power flow.
control
nodes for entry of relay contact
type
The upper
node controls
when the
timer.
time
time.
The lower node controls
when the
The timer is enabled when the lower node reIt resets when no power flow is available.
preset
contains
the
value
The upper element of the timer
which limits
the maximum value of the timer.
This
preset
may
to
0999).
These digits
be fixed value of three digits
(0001
represent
up to 999 seconds, or up to 9.99 seconds.
The timer
can never exceed this preset value.
location
within
the
The lower element refers
to a storage
In the center
of
controller
where the current
timer is stored.
parthe timer is a display
to indicate
the rate at which .that
TO.1
=
ticular
timer is programmed to operate
(T1.0 = seconds,
tenths of seconds, and T.O~ = hundredths of seconds).
logOn the right of the timer are two nodes from which the
These nodes will
proical output of the timer are available.
programmed to
the
vide power to any contact,
shunts, or coils
right of the timer.
its
The upper node provides power only when the timer is at
receiving
stops
This
output
is
de&energized
and
preset value.
stops.
No
the
timer
When this output
is
energized
power.
further
accumulating
of time beyond the preset is possible.
NOT at
The lower node provides power whenever the timer is
stops
passing
power
only
when
the
This
output
its preset.
timer is at its preset.
uppe.r node to
The timer will
accumulate time whenever the
can be turned
signal
The upper
receives
power.
the left
accumuON/OFF/ON as many times as necessary and the timer will
Each
late how long the signal was ON up to the
preset
value.
be
accumutime the upper node is re-energized,
time begins to
lated from its previous value held in the storage location,
regardless of how long the signal was OFF.
lower
They are reset only by the
Timers are accumulative.
stored
information
completely
node signal.
They retain
their
de-enerWhenever the
reset
signal
is
during power failure.
regardless
of the time value,
the timer will
be reset
to
gized,
re-enIt holds at that value until
the reset signal
is
zero.
ergized.
The number entered into the lower element of the timer
be a storage register
(reference
4XxX) wherein the current
is stored.
must
time
selected
register
each timer has its own holding
Normally,
with
by the user.
Thus, the maximum number of timers available
Do not
each memory size is the quantity
of holding registers.
more
than
for
location
use a holding register
as the storage
one timer.
III-13
3.2.5
COUNTERS
conCounters operate the same way as timers except for the
count
by
one
current
The counter increments
its
trol node.
on this
whenever the control
signal goes from OFF to ON. Only
positive
transition,
OFF to ON, is the count incremental.
enable/reset
of
the
The lower
left
node controls
the
the
counter
is
Whenever this signal is de-energized
counter.
signal
is
again
reset to zero.
the
This count is held until
999,
is
The number of events to be counted, up to
energized.
current
The
the
counter.
entered into the upper element
of
lower
the
count is stored in a holding register
identified
in
be used to
element of the counter.
Separate registers
should
Do not
store the current
time or count of each timer/counter.
share holding registers
between timers and counters.
current
The output of the counter is energized whenever the
value.
the
preset
stops
at
Counting
count equals
preset.
Whenever the counter is reset to zero via the lower node on the
The current
count
is
releft
side, the coil is de-energized.
tained during the power failure
since it is stored in a holding
Counters also have a second output
register
(reference
4XxX).
that provides power flow as long as count is NOT at its preset.
3.2.6
CASCADED COUNTERS/TIMERS
interconnected
or
Timers and counters can be cascaded
Figure III-11
shows a cascade
satisfy
any required
logic.
time
measuring
timer and counters to produce
a calendar
seconds, minutes,
and hours.
TS-80-0022-2
Figure 111-l1. Sample Timer/Counter Cascaded Logic
III-14
to
of
in
installed
Any 484 Controller
can be equipped with a factory
addition
to
reoption that provides extended capabilities
in
without
available
This option
is
and counters.
timers,
lays,
this
opFeatures
that are included in
regard to memory size.
tion and discussed in the following
paragraphs,
are as follows:
0
0
0
0
0
3.2.7
subtract,
operations
Arithmetic
(add,
divide).
Register
Input/Output.
Transitional
Contacts.
Eight separate
sequencers.
BCD Convert (Discrete
Inputs-to-Register;
Discrete
Outputs).
ARITHMETIC
multiply,
Register-to-
OPERATIONS
standard
arithmetic
operations:
all
This option provides
and division.
Each
multiplication,
subtraction,
addition,
arithmetic
element has control
input (ENABLE line),
holding
reThe arith111-12).
gisters,
and up to three outputs
(Figure
metic operation
is performed on every scan of the controller
in
can
be
The
outputs
which power is applied
to the ENABLE line.
appliother function
blocks, or coils as the
tied to contacts,
cation requires.
I
c
REGISTERS
TS-80-0010-1
-
1
OUTPUT
2
OUTPUT
3
111-12.
General Format for Arithmetic Option
the
middle
value
to
The ADDITION function
adds the upper
referenced
holding
lower
the
in
value and places the result
register.
than
greater
If the result
of an add function
is
a. value
digits
maximum
value
the holding register
can store (three
register
of the result
that will
fit
into the
999), the portion
the
reif
850
is
added
to
325,
For
example,
is placed there.
The
value
175
(three
least
significant
digits
of
sult is 1175.
eneroutput
result)
is placed in the holding register
and the
output
1
is
Only
gized to indicate
an overflow
has occurred.
Figure
ii
OUTPUT
III-15
functional
with
when energized.
addition,
and always
indicates
the
value
1000
The SUBTRACTION function
provides one of the most versatile
function,
this
With
tools available
to the control
designer.
any holding
in
the designer can compare two numbers located
operations
with
one of
the
register
and control
subsequent
set
point
three outputs.
can be used for
Thus, this function
functions,
dead band funccontrol
of analog loops, alarming
tions,
etc.
The format for subtraction
is as follows:
OUTPUTS:
than
middle
1 is ON if upper
value
is
greater
value.
2 is ON if upper value is equal to middle value.
3 is ON is upper value is less than middle value.
The outputs can be tied together
so that a "greater
than
or
function
can
be
logical
equal to" or "less than or equal to"
performed.
that
is,
The outputs are mutually
exclusive,
only
The
to
the
enable.
one will
be energized
when power flows
will
always
holding register
referenced
in the
lower
element
operasubtraction
contain the absolute numerical value of the
tion (i.e.,
the difference
of the two numbers).
and a
values are multiplied
In MULTIPLICATION, two 3-digit
6-digit
product is obtained.
Double
precision
accuracy
is
a
valuable
feature
of the multiplication
function.
The register
referenced
in the lower element is in
reality
two consecutive
registers,
the one named and the next one.
The one named will
contain'the
three most significant
digits
of
The
the
result.
through
output coil will
be ON as long as there is
power flow
the Enable contact.
In DIVISION,
a double precision
number (up to 999999 in
two
consecutive
registers)
can be divided by a fixed number or by a
register
content.
funcThis capability
allows
following
the
tions to be performed:
0
0
0
0
Scaling of analog signals
to engineering
Controlling
ratio.
Solving of formulas.
Splitting
register
contents.
The format
OUTPUTS:
for
division
1 is ON if
value.
2 is ON if
3 is ON if
units.
is as follows:
upper
value
is
greater
than
upper values is equal to middle
upper value is less than middle
middle
value.
value.
The output represents
successful
division
or results
of
ila result
legal division
such as dividing
by zero or obtaining
greater
than one register
can hold.
III-16
3.2.8
REGISTER
l/O
Register
I/O provides
the capabilitv
of
handli,ng
numerical
values in the I/O structure.
These numerical
values
can be
both received
from an external
source
(input
registers)
and
driven to an external
destination
(output
registers).
Each
register
includes a three-digit
quantity,
values
from 000 to
3001
to
There are 32 input registers
assigned references
999.
3031 and 32 output
registers,
references
4001
to
4032.
The
connected
to
input registers
receive
their
values from devices
from
the I/O structure
and can be only referenced,
not altered,
special
registers
are
the
controller.
The output
within
holding registers
(references
4001-4032)
that
can perform
the
dual purpose of storing
(holding)
numerical
values
as well
as
driving
them to the outside world.
3.2.9
TRANSITIONAL
CONTACTS
In addition
to the conventional
normally open and normally
484 Controllers,
with
all
closed contacts
that are available
provide
transitional
the Enhanced Instruction
Set options also
Transitional
contacts
can be used
contacts
(Figure 111-13).
anywhere in networks where the more conventional
NO and NC concontransitional
These
tacts had previously
been utilized.
signal
the
tacts will pass power for exactly
one scan whenever
is transitioned
from either
OFF to
to which they are referenced
selected.
depending
upon transitional
ON or ON to OFF,
type
inter(output
or
to any input or coil
They can be referenced
to sequencer steps.
nal) but cannot be referenced
TRANSITIONAL
TYPE
CONTACT
SELECTED
SYMBOL
OFF
REFERENCE
r
i‘
OFF
TRANSITION
I
1 CLOSE
CONTACT
POWER
,
FLOW
Figure
111-13.
Transitional Contacts
III-17
CLOSE
These contacts
respresent
a "one shot"
necessary when performing
a function
(e.g.,
division)
only once.
3.2.10
sometimes
which
is
multiplication
or
SEQUENCERS
Each
are
provided.
sequencers
Eight independent 32-step
sequencer operates similarly
to a stepping switch with a single
the
stepping
specific
reference
energized
at each position
of
form
2 in
the
These references
start
with the digit
switch.
three
digits
of
the
The significance
of the remaining
2xxx.
reference
is as follows:
YSequencer No. (1 through 8)
xx - Step Number (1 through 32)
values
placed
in
by mumerical
Sequencers are controlled
funcspecific
registers
(4051 to 4058) by any of the non-relay
or any arithmetic
operations.
A
tions such as counter,
timers,
that
value of zero or above 32 will
result
in all references
to
Values between one and 32 will
sequencer being de-energized.
other
and all
result
in that single reference
being energized
references
to that sequencer being de-energized
(Figure 111-14).
2301
a2302
231200
0
0
0
11
2311
0012
CNT
2310
4053
2309
3
T
4053
10
9
2300
0
0
0
6
0 00
6
7
4
5
2303
2304
2305
2306
2307
TS-80-0012-1
Figure 111-14.Twelve-Step Sequencer and Equivalent Circuit
count
The counter has a preset of 12 and stores its current
the
1047
is
energized,
time
input
in register
4053.
Every
equivaThis
is
value in register
4053 is incremented by one.
If
register
lent to moving the stepping switch one position.
III-18
(third
sequencer,
4053 contains
the value five,
reference
2305
step five)
is energized.
When the
current
count
equals
the
with
reference
2312
the stepping switch
stops
preset
(0012),
energized.
Whenever coil 0031
is
energized,
the
counter
is
goes back to
home (no
reset to zero and the stepping switch
regardless
of its current
count,
references
energized);
intermediate references
are not energized.
Each sequencer is completely
independent
since
it
is
controlled
by separate
register
values.
Sequencer
references
can
be used as often as necessary,
anywhere in the logic
where
relay contacts
are appropriate.
By using
calculate
logic,
any
sequencer can be made to skip steps and jump forward
or move
backwards as necessary;
intermediate
references
are
NOT enerSequencers references
are updated as soon as a change
gized.
in the content of a sequencer register
is
changed.
Thus,
one
network can drive the sequencers,
and the next network
use the
most recent value of the sequencer
references.
Sequencer
references cannot be used on transitional
contacts.
3.2.11 BCD CONVERT
The BCD CONVERT function
allows discrete
(ON-OFF)
modI/O
regisCoded Decimal)
ules to be referenced
as a BCD (Binary
inter.
This is, if it is desired to wire a thumbwheel switch
put into a set of discrete
input modules, the BCD CONVERT function will
allow these 12 inputs to be used as a numerical
value
a
if it is desired
to connect
Conversely,
in the controller.
discrete
output
modules,
of
the
BCD
LED display
to
a set
data)
CONVERT function
will
allow a holding register
(numerical
to be transmitted
to a display.
3.2.12 ENHANCED II INSTRUCTION SET OPTION
tion
InstrucThis instruction
set is similar
to the Enhanced
I
option and has the same capabilities,
plus the following:
0
0
0
0
0
3.2.13
Binary convert
(discrete
inputs-to-register;
to-discrete
outputs).
Register-to-table
move.
Table-to-register
move.
SKIP and BY-PASS I/O.
MODBUSCommunication Interface.
register-
BINARY CONVERT
now
This function
is similar
to the BCD CONVERT except that
data
as
numerical
the input and output modules do not receive
bits
This BINARY data is in the form of
such, but BINARY data.
done
Conversion
is
(ones and zeros) contained
in a register.
with ten bits.
III-19
discrete
The BINARY CONVERT function
allows the transfer
of
binary
the
inputs to be made to registers,
and the transfer
of
bit pattern
of registers
to be made to discrete
outputs.
example,
a known
This capability
is very useful when, for
or
bit pattern
is desired to be outputted
upon reaching a step
could
be
O=de-energize)
(l=energize;
The bit pattern
cycle.
the
output
upon
held in a register
and then simply
moved to
When a new step is reached,
a different
acutation
of a cycle.
register
and transbit pattern
can be retrieved
from another
ferred
to the output modules.
may
In a similar
fashion,
the status of inputs
into the controller
and stored as bits in a register.
for
be a method for setting
different
bit patterns
status discussed previously.
3.2.14
be
brought
This
may
the
output
MOVE FUNCTION
The MOVE function
allows numerical data
to
another
to be moved from one register
functions
allow a table to be utilized
with
to be retained
and
data, report information
time, errors
stored in the order they were
to be multiplexed
through the discrete
I/O
BINARY CONVERT operation.
contents)
(register
on command.
These
source
recipe
or
examined at a later
and data
detected,
with
structure
the
found
in
the
The concept is similar
to
the
MOVE codes
MODICON Model 184 and 384 Controllers
which have made them so
somewhat different.
powerful.
The implementation,
however, is
different
values
The MOVE function
can be used for
presetting
in timers and counters,
doing comparisons,
etc.
The MOVE in
the
484
Controller
is
a form of
INDIRECT
takes the form of
a block
ADDRESSING. The function
with
two
register
references
in it; a TO register
on the
bottom
and a
FROM register
on the top (Figure 111-15).
ENABLE I]
T+R
1 FROM)
OR R+T
4xxx
TS-80-0013-1
Figure 111-15.MOVE Format
III-20
(TO)
The FROM register
may be an input register
13XxX) such as a
thumbwheel input or a holding register
(4XxX).
The TO register
must be a holding register.
A discussion
of the two MOVE functions
(i.e.,
Table-to-Register
and Register-to-Table)
follows.
3.2.15 TABLE-TO-REGISTER
MOVE
Similar
to the T+R Move, the R+T Move allows
the
loading
register
whose conof a table of registers
from one central
receives
tents are changing.
When the
ENABLE signal
power
bottom
register
will
lock at the
flow, the R+T function
(TO)
be changed.
The upper
content to determine
the register
to
this
be placed
in
the
value
to
register
(FROM) content is
register
and thus alter
its content.
ENABLE
4100
EXAMPLE:
T+R
4001
In either
MOVE function,
it
Manual and 484 Application
Notes
typical
applications.
If 4100 contains
the
value 43, register
4043 (4000+043) will
have its content
transferred
to
register
4001.
recommended
is
be reviewed for
that
the
operation
484
and
ENABLE
EXAMPLE:
4095
R+T
4120
3.2.16
If 4120 contains
the
value 225, register
4225 (4000+225) will
be loaded with the
content of
register
4095.
SKIP
set
of
The SKIP function
allows a designated
network
or
This
the
controller.
networks to be "skipped" by the scan of
that
required
effectively
reduces the potential
scan time from
required
by the
minimum monito solve all networks to that
timer
times
toring
logic until
a certain
event happens
(e.g.,
achieved,
limit
switch activated,
level
out, set point reached,
etc.).
3.2.17
BY-PASS I/O
BY-PASS I/O allows unused I/O
Similar
to the SKIP function,
the
scanning
function.
and not serviced
in
to be "by-passed"
register
Portions
of both the discrete
I/O as well as the
I/O
III-21
can be by-passed with separate
user controlled
savings is 7 msec on the scan time.
limits.
Maximum
tools,
Because SKIP and BY-PASS functions
are very powerful
their
use should be considered
only by those designers
that
are
totally
familiar
with
the
484 Manual
and its
precautions.
Using both SKIP and BY-PASS I/O,
the 484 can be operated
at
a
minimum scan time of 1.5 msec.
3.2.18 MODBUS COMMUNICATION
CAPABILITY
unit
interface
that
Combined with a MODBUScommunications
the
communication
attaches
the controller
to a MODBUS
system,
the
capability
to
Enhanced II Instruction
Set Option includes
details
For
respond to commands received
from a remote master.
refer
to MODICON MODBUS System
on configurations
and features,
User's Manual.
3.3
USE OF P180 CRT PROGRAMMING PANEL
TS-80-0023-2
Figure
3.3.1
111-16.
Pl80 CRT Programming Panel
INTRODUCTION
The most commonly used programming device is
the
P180 CRT
provides
the
This
device
Programming Panel (Figure 111-16).
proprimary human-machine interface
that
determines
how the
keyboard
The programming panel is
small,
cessor will
be used.
portable,
and ruggedly built.
III-22
The
III-17).
control,
board
function
(Figure
keyboard
is
a dedicated
network
The keys are divided
into four basic
types:
and cursor control.
numerical
entry,
relay control,
TS-80-0014-1
Figure 111-l7. P180 Keyboard
III-23
3.3.2
CRT DISPLAY
on black
screen
Data is displayed
on a 5 inch CRT, white
into
horizontally
two
The
screen
is
divided
(Figure 111-18).
sections:
user logic and status/assembly.
LOGIC
AREA
TS-80-0015-1
ASSEMBLY 1 MESSAGE 1 MACHINE
1
REFERENCE
Figure 111-18.General CRT Screen Format
The upper seven lines display
the user logic
in
any order
selected
by the operator.
unit
displayed
is
a
The smallest
network.
A network is a group of
logic
elements
(relay
contacts,
fixed numerical
values,
register
coils
references,
and
so on).
These are connected together
at some point
or points.
Networks are identified
by a step number assigned
when a network is constructed.
The minimum size of a network is one rung
Figure
Maximum network size
is
seven rungs.
of the ladder.
III-3
shows the program
logic
display.
the
user
forma+t for
Figure III-19
shows typical
programmed networks.
The lower
two lines
four
contain
status
areas
(Figure
111-18) which provide information
to the
The first
operator.
must be
elements
is the assembly area on the
Program
left.
diagram.
All
ladder
assembled here before being entered into
portions
of an element must be specified
before
the
processor
indiassembly
portion
Any white area in the
will
accept it.
cates part of the element is missing.
Next to the assembly area is the
Messages
message space.
such as MEMORYPROTECT ON, Bad Node and Illegal
Reference
are
provided for the operator.
III-24
I
TS-80-0024-2
TS-80-0025-2
Figure 111-19.Typical Programmed Networks
III-25
In the center of the status area, are two values related
to
the
First
is the step number of
the controller
program status.
S-bit
words)
network on the screen.
The amount of memory (in
already used is also shown in this area.
It is programmed by
The final
status area is at the right.
These can be IlOthe operator
with up to six legal references.
gic coils,
inputs or
References
will
have their
registers.
curthe
current
status displayed
at all times no matter where
sor may be.
Discrete
references
OXXX and LXXX are indicated
as
displayed
numerical
content
have their
ON or OFF. Registers
(000 to 999).
3.4
PROGRAMMING INSTRUCTIONS
3.4.1
NETWORK CONTROLS
These controls
(Figure 111-17)
discussed
are
pushbuttons indicated
with
an asterisk(*)
will
unless MEMORYPROTECT is OFF:
as
not
follows:
function
*START NEXT - This pushbutton causes a new network
to
be
created
immediately
after
the network on the screen.
All
networks following
the current
network will
have their
step
numbers increased by one.
If no logic is on the
screen,
new
the
network will
be created
at
network
number one
(before
all
existing
logic).
All existing
networks
will
have their
step
numbers increased by one, providing
space for the new logic
at
network one.
SUPERVISORY - This pushbutton allows the operator
to
enter
the most powerful
the
484 Controller.
level
of
programming
This mode should be used only
with
great
care,
since
major
changes such as clear all logic can occur
once in
the
Supervisory mode. Depressing the SUPERVISOR pushbutton
clears
the
screen and displays
seven options available
to the
operator
as
follows:
=
0
EXIT Supervisory
State
*1
=
STOP Controller
Sweep
*2
=
START Controller
Sweep
*3
=
CLEAR Controller
Memory
=
4
LOAD Memory through ASCII Port
*5
=
DUMP Memory from ASCII Port
=
6
VERIFY* Memory against ASCII Port
Entering
the proper
numerical
digit
from
the
keyboard
will
funccause that function
to occur.
Exit returns CRT to normal
tions;
outall
Stop/Start
control
scanning of controller
with
logic
puts OFF when sweep stopped.
Clear
removes a.11 stored
from controller
memory. Dump Memory causes the entire
484 Controller
memory (logic
and coil/register
storage)
to
be outputted via an ASCII port built
into the
P180 Programmer.
The
III-26
Pl.80 port
should
be a simple
ASCII device connected to the
ASCII tape
loader
capable
of
operating
at
600 baud.
The
made.
scanning of the controller
is NOT halted when a dump is
into
The Load Memory allows a previous ASCII Dump to be placed
to
a
the 484 Controller
memory: scanning must be stopped prior
load, and requires
be
either
a start
command or AC power to
the
scanning
following
a
cycled on the controller
to restart
compare controller's
memory
successful
Verify
will
load.
against
tape record made by the ASCII device.
svstem,
whenTo prevent accidental
changes to the control
disever a 1 (Stop) or a 3 (Clear)
is selected,
the
CRT will
The operation
is performed
play the option "7 = Confirm."
only
To cancel
an
after
the digit
7 is selected
as the second step.
select
operation
before
it
is
executed,
option
any other
The controller
must be stopped (option 1) prior
to
se(O-r;).
lecting
a Clear (option 3) or Load (option 4).
'U
cause
the
pushbutton
will
this
*DELETE - When depressed,
element of the ladder diagram where the cursor is positioned
to
bottom
Relay elements can be deleted only from the
be deleted.
rung when only
one
of a column or from the right of the
top
Elements can always be replaced
element remains in the column.
TO delete
a non-relay
funcby horizontal
and vertical
opens.
the
the
function;
top of
all
the cursor is placed at
tion,
function
will
be simultaneously
this
numerical
elements
of
DELETE
If the shift
has been previously
selected,
the
deleted.
pushbutton will
cause the entire
network that the cursor
is
on
follow
the
deleted
All existing
networks that
to be removed.
Delenetwork will
have their
step numbers decreased
by one.
as
tions occur simultaneously
both from the CRT screen as well
the memory of the controller.
inputs can be dis*DISABLE - Both logic coils and discrete
pushbutton
is
control
when this
connected from their
normal
still
exists
within
the
condepressed.
The normal control
disables
are
retentive
but is temporarily
bypassed;
troller,
upon power failure.
Coils
(0XxX) are disabled
by placing
the
cursor on the coil in the LOGIC AREA and depressing
the
DISARLE
similarly
disabled
by placing
pushbutton.
Inputs
(1XxX) are
Once disabled,
the cursor on the input in the REFERENCEAREA.
these references
are no longer under control
of
the
controller
their
"freeze"
references
changed.
Disabled
until
manually
as desired
can be simulstate
(ON/OFF); as many references
controlled
by this
All
contacts/outputs
taneously disabled.
reference
wherever they are in the ladder diagram, will
reflect
the
reference.
Depressing
disabled
the ON/OFF state of
the
pushbutton a second time for a disable
reference
will
return
it
to the normal (enabled)
condition.
Li;
the ON/OFF
alter
*FORCE - This bushbutton can be used to
The cursor is placed on a prestate of any disable
reference.
logic
only
ladder
diagram;
viously
disabled
reference
in the
III-27
coils
(0XxX) and discrete
inputs,
the pushbutton is depressed,
the
altered
(e.g.,
OFF to ON or ON to
of this pushbutton will
cause the
to ON to OFF to ON, etc.
3.4.2
When
(1XxX) can be disabled.
state of the reference
will
be
Successive
depressing
OFF).
reference
to be toggled
OFF
RELAY CONTACT CONTROLS
When programming relay contacts
into the assembly area,
the
ten pushbuttons
(plus two spares)
which
will
control
contact
type is selected.
Changes are easily made by entering
the
corrected contact type anytime prior
to entry into the network,
or
construction
of a new element if the existing
logic
element
of
a network is to be altered.
The relay element can be either
a
normal open contact
(_I k),
a normally closed
contact
(++)I
a horizontal
shunt ( open
(*
*).
In
or a horizontal
1,
addition,
any relay element can have a vertical
connection
to
Verthe next lower rung ( 1 ), or a vertical
connection
(:).
tical
connections
are possible
only to the
right
of
the
elecoils
or
ment; vertical
connections
are not possible
with
the
bottom (seventh)
rung of a network.
capabilities
If
enhanced
transitional
contacts
can be used
(-T-or-&-),
are available,
otherwise
an error message will
appear when these
contacts
are
one
Transitional
contacts
pass power for
exactly
selected.
scan, when their
referenced
coil or input goes from OFF to ON
(-(
or ON to OFF. Coils of any network can be normal
)-)
or
latched
(-(L)-);
coils
all logic coils are
Normal
latchable.
latched
coils
will
be de-energized
if a power failure
occurs;
are restored
following
a power failure
to the state
(ON or OFF)
that they held prior
to the power failure.
3.4.3
NUMERICAL ENTRY
This set of controls
(Figure 111-17)
is
used basically
to
enter numerical values into the
area.
These
values
assembly
can be discrete
references
to
control
contacts,
fixed
relay
values or register
references
for numerical
elements,
or
value
for storage in a holding register.
digits
All
four
must be
with existing
digits
moved one posi_tion
entered,
to
the
left
with each new digit
entered at the
units
position.
Numerical
values must first
be entered into the assembly
area,
prior
to
use as part of the controller's
logic.
have dual
All numerical
keys, except for the
five,
digit
functions
controlled
by a shift
key.
In addition
to
the
entry
of numerical
values,
these keys specify non-relay
functions
to
the assembly area.
The upper element of the non-relay
function
is specified
by these keys.
For example, if the
SHIFT
is
depressed and then the digit
zero, the assembly area will
be prepared to construct
the preset of the counter logic.
When this
III-28
element is placed into the ladder diagram, the next
lower
element will
be coded to
accept
a holding
register
reference
a two element
function.
If
a
(4XXX), since the counter is
SHIFT,
then the seven key is depressed,
assembly
area
is
the
prepared to construct
the upper
element
of
an ADD function.
When this element is placed into the ladder
the
diagram,
next
two elements will
be coded for arithmetic
references,
since
the
ADD is a three element function.
The non-relay
functions
are
listed
under the SHIFT operation
discussed below.
prior
to
another
SHIFT - This pushbutton can be depressed
key to alter
its function.
A letter
S inside a small
rectangle
to
is displayed
in the message space next
the
assembly
area
The shift
will
be removed after
after
the SHIFT is depressed.
after
any of
the
the depressing
of the key a second time, or
The SHIFT
twelve dual function
keys are depressed.
operkey
ates similar
to the upper case shift
control
on a typewriter.
A complete discussion
of shifted
controls
is
provided
as part
of the discussion
of basic keys' functions.
The following
is
a
list
of dual function
keys:
Basic
Key Label
DELETE Element
T3R
Commence SEARCH
0 (zero)
1 (one)
2 (two)
3 (three)
4 (four)
6 (six)
7 (seven)
8 (eight)
9 (nine)
CLEAR Assembly Area
Shifted
(Upper Case)
Function
upper Label
DELETE Network
Register-to-Table
Continue Search
Counter
Timer l/100 Set
Timer l/10 Set
Timer Seconds
Subtract
Divide
Add
Convert
Multiply
CLEAR Entire
Screen
Netwrk
RJT
Cont
Ctr
T.01
TO.1
T1.0
T
+
CONV
X
ALL
the
assembly
this pushbutton clears
CLEAR - When depressed,
CLEAR, the
the
If a SHIFT has been commenced prior
to
area.
area,
including
assembly
will
be cleared,
entire
CRT screen
number.
error codes, and step (network)
3.4.4 ENTRY CONTROLS
entry
of
the
the
These controls
(Figure 111-17)
relate
to
area.
assembly
the
logic elements into the ladder diagram from
elements
Changes are made to the controller's
memory and these
J-adder diachecked for validity
only when their
entry into the
assembly
area
The element is moved from the
gram is attempted.
If
logic
to the ladder diagram where the cursor is positioned.
III-29
exists
at the cursor
ment in the assembly
specified
(i.e.,
left
be altered
when new
sembly area must be
vacant spaces of the
eleposition,
it will
be replaced
by the
area
not
of the assembly
area; any portion
not
by white area),
will
blank - indicated
the
asAll Portions
of
logic is entered.
into
specified
if new logic is to be entered
ladder diagram.
and
Any combination
of relay contacts,
vertical
connections,
are
etc.),
arithmetics,
non-relay
functions
(timers,
counters,
the
10 x 7 network
possible
as long as there is space within
The
Logic coils can be entered at the end of any rung.
format.
logic format requires
the top rung to be complete for any column
any loqic
must
Each column that stores
that will
store logic.
desired
by
element
be programmed from the top down to the last
be
programmed
with
must
elements
Where
necessary,
the user.
horizontal
shunts or horizontal
opens to complete the format.
sufNon-relay
elements can be entered into any column with
Nonblank.
logic
is
existing
ficient
space, as long as the
directly;
elements
relay elements cannot be replaced with relay
the
rethe non-relay
functions
must first
be deleted,
and then
top
of
the
the
lay functions
entered.
Programming starts
at
rung
tothe
left
most column, and can then proceed along
top
wards the right or down the first
column.
that
There are four pushbuttons marked with arrows (t,+,+,&)
controls
control
the position
of the cursor.
When one of
these
direction
the
the cursor is moved one position
in
is depressed,
indicated,
unless the cursor is at the boundarv
of
the
screen.
"wrap
around"
the
cursor
will
At the right
and left
boundary
At the. top
when forced beyond either
side to the opposite side.
curor bottom of the screen, there is no "wrap around" and the
controls
sor will
not move beyond these boundaries.
Other
are
as follows:
ERROR RESET - If an error is detected
in
operation
of
the
be flashed and the ENTER and
the P180 Programmer, a message will
network controls
will
be locked out.
When any other
pushbutton
(including
ERROR RESET) is
erased,
depressed,
the
message is
assuming the error condition
does not
continue
to
exist,
and
then the keyboard is completely
functional.
ENTER - If MEMORYPROTECT is OFF, the ENTER pushbutton
will
cause the assembly area to be copied into the
location
selected
by the cursor;
the assembly area is not altered
and the
cursor
remains at its previdus location.
If this
location
is
in
the
logic area, the entire
assembly area will
be moved as a logic
element after
passing appropriate
error checking.
If the
cursor
is in the reference
status area and on a holding register
referwill
be
ence, the numerical content of the assembly
only
area
moved into the register.
III-30
Of
all
logic
a search
SEARCH - This pushbutton initiates
will
be
The search
base.
entered into the controller's
data
network
one,
and
started
at the first
(upper left)
contact
of
the
continue through all networks column by column, until
either
end of
logic
is
desired
element
is
located
or
detected.
the
assembly
in
area;
Searches are performed based upon data
portions
of the element left
blank (undefined)
will
not
be conall
references
to
For example,
if
sidered during the search.
input 1029 are desired
(normally
open or
normally
closed
cononly
the
connector),
reference
tacts with or without vertical
value 1029 is entered into the assembly area.
When this
pushfirst
network
begins
and the
button is depressed,
the search
using the reference
is displayed
in its entiretv.
If
additional
pripr
to
desired,
the
SHIFT key i s depressed
networks are
closing
this pushbutton a second time; the
shifted
search
will
(not
continue the search from where the previous match was found
at start
of logic).
GET - This pushbutton is used to load
the
reference
status
The desired reference
is entered into the
assembly
area,
area.
and the cursor positioned
in the reference
(right
side)
status
desires
to
its
display
status.
The
area where the operator
status of logic coils
(OXXX), discrete
inputs (1XxX),
or
regisreferences
sequencer
4XXX) can be displayed;
ters (3XxX or
(2YXX) cannot be displayed.
Up to six
references
of
any type
can be displayed
simultaneously,
with
the
reference
number on
top and the status immediately
below it.
Discrete
status
will
input
indibe provided as ON or OFF; a D prior
to
the
status
cates a disabled
reference.
Register
statuses
are provided as a
three-digit
value indicating
the content of the register.
Successive depressions
of the GET pushbutton with the
cursor
that
reference
to
on a reference
in the status area will
cause
increase
by one for each depression.
The assembly
area
will
also copy this reference
regardless
of its previous content.
To
remove a reference
from the status area,
a DELETE is
selected
while the cursor is on that reference
area.
GET NEXT - When depressed,
currently
on the screen will
network on the screen is step
cause the network step 24 to
the screen, network one will
the
network
following
the
one
i
f
For
example,
the
be displayed.
this
pushbutton
will
number 23,
If no network
is
on
be displayed.
be displayed.
to the GET NEXT,
GET PREV - This pushbutton operates similar
network
is
obtained.
the
previous
except that when depressed
screen,
this
23 on the
network
Using previous example, with
pushbutton causes network 22 to be displayed.
see GOULD-MODICON USER'S
For complete programming details,
MANUAL, January 1979, pages A-10 through A-21.
III-31
3.5
USE OF MODEL T158 TELEPHONE
3.5.1
DESCRIPTION
INTERFACE
The MODICON Telephone Interface
(Figures III-20
and 111-21)
is a device
which
allows
to
be
the
Programmable
Controller
linked
to the MODICON Service Center over
standard
voice
grade
telephone lines.
The Model T158 is an acoustical
coupler
data
which mates with the standard telephone
hand-set.
Models
T151
and T152 are designed to be used with
and 1.84/384
MODICON 084
Controllers;
these units can also
be used with
the
484 Controller
without
the specialized
interface
designed
the
084
for
and 184/384 Controller.
Regardless
of
which model Telephone
Interface
is used, all require
the use of the
J470
EIA Adapter
to communicate to the 484 Controller
(Section IV of this manual).
The T158 Telephone Interface
is housed in a rugged
for
case
portability
and safe storage.
No special
knowledge
or
training
is required
to use any MODICON Telephone Interface.
TS-60-0026-2
Figure
111-20.
T158Telephone Interface
III-32
20
The T158 Telephone Interface
in its carrying
case weighs
lbs and has outside dimensions of 14.75 in. x 14 in. x 1O.S in.
ambient
air,
The acoustic
coupler can operate in 0-50°C
lo-95%
has a
(non-condensing).
The J470 Adapter
relative
humidity
conspecial
mounting hanger that allows it
to
be temporarily
can operate
The adapter
nected to the front of the mainframe.
in ambient air 0-60°C and lo-95% humidity
(non-condensing).
Figure 111-21.Controls
3.5.2
OPERATING
on Telephone
Interface
PROCEDURE
Center
can
After complete installation
the MODICON Service
will
be answered
Your phone call
be called
at (617-475-1181).
by the Service Center Operator who will
want to know:
1.
Your name and company.
2.
The serial
number or system number of the controller
which you are connected.
3.
If the call
is for
What service
you desire.
the operator
will
probablv ask other
service,
After
this
switch over to
ing from phone
hear an audible
tion,
you must
to
diagnostic
questions.
that
request
will
vou
discussion,
the operator
entails
switchAt the MODICON end this
"Data."
listening,
still
If you are
to data.
You wi.!_1
"Data"
At vour end to make the
connectone.
cups of
place the handset firmly
into the rubber
III-33
One of the cups is lettered
CORD, which
the acoustical
coupler.
The
handset.
the
identifies
the cup receiving
the CORD end of
and transthe
headset
receiver
rubber cups fit
snugly about
the
affecting
room noise
reducing the possibility
of
mitter,
communications.
coupler,
When you have placed the handset correctly
into the
data,
and the Service Center Operator has switched from voice to
The
the green CARRIER lamp on your acoustic
coupler will
light.
During thi_s service,
Service Center Operator
is now in control.
When the lamp goes off,
you must watch this green CARRIER lamp.
you to
waiting
for
the Operator has switched to voice and is
pick up the handset again.
Since reliabie
error checking cannot be done on communicanotice
that
tions while the controller
is operating,
You will
occur
shortly
after
switching
to data a short communication will
outwhich will
turn off the controller
RUN lamp as well as all
its
logic
be scanning
Although the controller
will
not
puts.
communicapable
of
is off,
it is
-(running) when the RUN light
eating to Service Center.
It is good practice
when
pany switchboard,
to explain
Operators
have
a data call.
when they hear a tone rather
3.6
complacing your call through your
making
to the operator
that you are
connection
the
been known to break
than voices.
MODEL L206 PROGRAM TAPE LOADER
TS-80-0028-2
Figure 111-22.L206 Tape Loader
III-34
3.6.1
DESCRIPTION
The Model L206 Program Tape Loader (Figure 111-22)
is a magrecording
and renetic tape cartridge
unit designed for field
loading of user programs from the
484 Programmable
Controller.
284,
184,
384,
This loader is also compatible
with models 084,
units.
The Proand 1084 Controllers
with different
interface
error
gram Loader features
ease of operation
and fully
automatic
detection
and protection.
The Model 206 Program Loader
permits
the user to:
Record his control
programs on magnetic tape cartridges.
Load a control
program from a magnetic tape cartridge.
the
controller's
memory
Verify
a tape, either
against
or internal
(tape only) parity
check.
0
0
0
case
and reThe Model L206 Loader is housed in
a rugged
The
quires a Model J47O Adapter set for any standard baud rate.
tape
case also provides space for storage of up to five magnetic
one MODICON program
Each cartridge
can store only
cartridges.
484 ConThe program
from
the
regardless
of controlr'er
type.
dytroller
consists
of the entire
logic memory as well
as the
status,
all
disabled
In addition
to user logic,
namic memory.
coil states,
and holding register
contents will
be included in
a
tape record or load.
3.6.2
SPECIFICATIONS
(381 mmx 533mm x 203mm).
Dimensions:
15"x21"~8"
Weight:
35 pounds (15.9Kg).
Cartridge
Size:
300 feet
Cartridge
Capacity:
51.2 blocks,
bit words.
each
block
256
eight
18 inches/set.
Read/Write:
Rewind: 100 inches/set.
Speed:
Write
(9115m).
Protect:
Removing the colored
the
the bottom
of
recording
inhibits
tridge.
on
coded flap
tape
cartridge
caron that
Baud Rates:
3.10,
150,
200,
1800, 2400, '3500,
and 19,200 baud.
300,
4800,
Power Requirements:
115v + lO%, 50-60
220V -T lo%, 50-60
Hz or
Hz, 60 VA.
III-35
600,
7200,
1200,
9600,
Ambient Temperatures
10-50" C,
idity
up to 95% non-condensing
Environment:
Hum-
TS-80
Figure 111-23.L206 Controls and Indicators
3.6.3
CONTROLS AND INDICATORS (Figure M-23)
ON/OFF:
Controls
application
of AC power.
MAIN POWER:
Indicates
OPERATE/VERIFY:
Selects mode of operation,
tape
(record
ating with
controller)
or verify
data
RECORD/LOAD:
either
reoperation,
Selects
type
of
load
from
tape
to
cording on tape
or
Spring loaded toward
RECORD
controller.
position.
when AC power has been applied.
either
operload
tape
of
on tape.
PAUSE TAPE:
operaoperation;
Interrupts
tape
tape
stopped
by
continued
from where
tion
beginning
returned
to
depressing GO or
of tape depressing RESET.
GO:
Pushbutton that
of operation.
RESET:
Pushbutton that terminates
returns
tape to beginning.
III-36
initiates
selected
mode
operation
and
.
CONTROLLERTYPE:
used
to
Twelve
position
thumbwheel
that
is
conselect
type of controller
four
nected to program loader.
Set
to
for 484 Controller.
RUN:
Indicates
dition.
PAUSE:
Blinks
IDLE:
Indicates
when loader
but available.
DC PWR OK:
internal
Indicates
DC power from
supply is within
regulation.
NO COMM:
but
Indicates
when operation
was started
terminated
due to
communinability
to
icate with controller.
ERR HALT:
Indicates
when operation
detection
of sufficient
in unreliable
operation.
COMMERR:
Indicates
whenever error
between
communications
loader.
detected
is
controller
in
and
TAPE ERR:
Indicates
whenever
tape operation.
is
detected
in
REWIND:
On when rewind
been completely
BOT/EOT:
On when tape
is
at
(BOT) or end of tape
WRITE/PROTECT:
On when tape
being written
inserted
on.
is
RECORD:
On when tape
troller.
is beinq
recorded
BAUD RATE:
Four indicators
and an active
controller.
3.6.4 OPERATING
Set-up:
when loader
when loader
is
operating
is
con-
in pause condition.
not
is
was
errors
error
in progress
rewound.
operating
power
halted
by
result
to
or
beginning
(EOT).
tape
of
protected
that indicate
communication
from
has
tape
from
con-
baud rate
channel
to
PROCEDURES
Connect communications cable to J470
Select either
X338 on J470 adapter.
and S5 to zero (no parity).
III-37
Adapter
EIA or
with
both
Turn loader's
AC power ON. Ensure
AC power applied and RUN light
lit.
Select
Insert
RECORD:
has
controller
CONTROLLERTYPE (four
= 484
tape cartridge
with side A up.
Controller).
Ensure WRITE/PROTECT indicator
is not lit.
OPERATE mode and RECORDoperation.
Select
Depress GO pushbutton.
Loader
will
automatically
select
proper
baud rate,
starting
with
19,200
baud, that matches the setting
on the
Adapter
to
which it is connected.
A record of the program can be made with
conthe
troller
operating
or
not
operating
(RUN light
The record operation
out).
will
not
change
the
status of the controller's
RUN light.
At the end of the record
rewound to the beginning.
LOAD:
the tape
is
automatically
turn MEMORYPROTECT to the OFF posAt controller,
Depress
OPERATE mode.
At loader,
select
ition.
toward
LOAD operaand hold spring return
switch
GO pushbutton.
Resimultaneously
depress
tion;
lease both switches.
Loader will
automatically
select proper baud rate,
setstarting
with 19,200 baud, that
matches
the
ting on the Adapter to which it is connected.
Once communication
at
baud rate
is
the
proper
"traps"
the
the loader automatically
established,
controller,
ceasing its scanning.
RUN liqht
goes
must
To untrap
the controller,
a load verify
off.
be done.
At the end of the load, the
rewound to the beginning.
VERIFY:
Select
sible,
tape
VERIFY mode. Two types
selected
as follows:
is
automatically
of verify
are
pos-
(1)
Verify
tape
format
RECORD operation.
(2)
Verify
controller
memory.
tape
against
operation.
MEMORY
Select
LOAD
and hold
PROTECT must be OFF at
controller.
After
depress
GO
i s determined,
verify
type
of
pushbutton to start COMPARE. T.Terify will
NOT
status
if
it
is
done
alter
the RUN light
against
the controller's
memory.
III-38
(parity
check).
Select
Failure
of the verify
ating of the operation
tor ON.
will
result
in
with ERR HALT
terminindica-
NOTE
controller
When performing
a Load Verify,
the
have perviously
been loaded with the tape and the
light
must NOT have been re-established.
OPERATING:
RUN
(1)
Once an operation
has begun,
all
conexcept
trols
have no effect
on the operation
the RESET and PAUSE. The RESET pushbutton,
in
when depressed,
terminates
any operation
progress and rewinds
the
tape
to
the
becauses
The PAUSE TAPE switch
anv
ginning.
and
operation
in progress
to
be suspended
controls
can be
other
All
tape stopped.
repositioned
without affecting
anv operation
once begun.
The followinq
indicators
will
(2)
the various modes of operation:
hi
must
RUN
MODE
1
I
RECORD
1
be -on
for
BAUD RATE
I
RECORD
LOAD
VERIFY TAPE
VERIFY AGAINST
MEMORY
can be opened
The dust cover
(3)
affecting
an operation
in progress.
without
(4)
If a tape is not rewound to
the-- beginning at the start
of the operation,
it
will
be automatically
rewound prior
to
commencing
the operation.
L
(5) Whenever an error is detected,
a single
tone is
provided
by the
loader.
If
the
error
is
recoverable,
the
operation
continues and a valid
result
i s obtained;
if
the error is not recoverable,
the
operation
is
halted
with
ERR. HALT indicator
lit.
Poor communications
or
gradual
degradation
of the tape after
many uses can be detected
by the number of tones issued during
a successful
load.
III-39
with
compatible
(6)
Communications
are
posiCenter
In the Service
W-232 type D.
tion the communications
can be concable
Inter(via
Telephone
nected to a computer
from
the
face, if necessary)
to load/record
computer.
3.6.5
FUNCTIONAL DESCRIPTION
with
All data is recorded at least twice in 256 word blocks
the
parity,
If
the
first
block
has
good
parity
on each block.
iS
data
has incorrect
parity,
second is not used; if the first
operation,
During
a record
obtained from the second block.
parity
is
deIf incorrect
parity
is verified
on each block.
successive blocks are written
until
at least two blocks
tected,
have valid parity.
seven
The record is terminated
if more than
succesdue to
blocks are required
to record any single block
sive parity
failures.
During a load operation,
invalid
parity
from
when reading
good parity
the tape causes successive blocks to be used until
is obtained.
If invalid
parity
is obtained for all
records
of
TAPE ERR inthe operation
is terminated
with
the same block,
dicated.
Once good parity
is obtained,
all
successive
records
of that block will
be ignored until
the next block is located.
Time required
to record/load
depends upon baud rate and memory size.
The following
are some typical
times to record a 4K
484 program.
Baud Rate
Time
9600
4800
1200
300
110
15
25
90
5
14
Loading
or
verifying
typically
required
to record a program.
3.7
J474 COMMUNICATION
3.7.1
DESCRIPTION
Seconds
Seconds
Seconds
Minutes
Minutes
takes
50%
of
the
time
INTERFACE = MODBUS
This interface
(Figure 111-24)
allows a "Master" such as a
computer to communicate to a group of 484 Controllers.
Up to
32 controllers
can be connected together
(each
with
J474)
and
be monitored/controlled
by a single port on the "Master".
Each
controller
can be polled by the "Master",
one at a time,
based
interfacing
within
upon the program
the
"Master".
Hardware
(via J478) conforms to EIA Specification
RS-232,
a standard
III-40
Software protocol
is described
option on most computers.
separate document discussing
the MODBUScapabilities.
in
a
TS-80-0030-2
Figure
111-24.
J474 Interface
to
be easily
This MODBUS system allows the 484 Controller
can
system.
The "Master"
processing
integrated
into a data
collect
information
for management reporting
while the 484 ConAlterequipment.
troller
continues
to direct
the
production
all
into
the "Master" can down-load receipts/standards
nately,
484 Controllers
at the same time to ensure synchronism
of
dis"Master"
the
A further
capability
allows
tributed
processors.
the
force
simulate
or
to control
inputs and outputs and thus
the
Finally
structure.
th
controller's
operation
of
I/O
conthe logic in any/all
"Master" could be programmed to alter
controlvia a TTY or CRT, all
trollers;
thus, from one station
lers could be reprogrammed without use of the
P180 Programming
Some of th commands provided in the protocol
include:
Panel.
III-41
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
READ COILS
READ INPUTS
READ INPUT REGISTERS
READ HOLDING REGISTERS
WRITE HOLDING REGISTER
FORCE COIL
POLL STATUS
POLL COMPLETE
PROGRAM
(9)
3.7.2
INSTALLATION
The J474 communication
interface
(Figure
111-24)
can be
bottom,
or
mounted adjacent
to the 484 mainframe either
.on the
to the right or left.
Half
High
It physically
replaces
a
I/O
Housing (B547/B549)
both in size and mounting
dimensions.
In
addition
to data communications,
this interface
also provides
a
the
along
voice communications between any two or more points
must be equipped
with
an Enhanced
MODBUS. The 484 Controller
II CPU to communicate with a J474.
The following
is
a brief
summary specification
of the J474
interface.
Operating
power
is obtained form the 484 Power Supply;
.no external
power is
required.
3.7.3
SPECIFICATIONS
Temperature:
0 to 60°C
Humidity:
O-95% (non-condensing).
Size
4.75"
x 14.40:
x
365.8mm x 174.8mm).
(WXHXD):
(32 to 140 F).
6.88:
Weight:
6 lbs
Communications:
Asynchronous,
Frequency
to 50 Khz band usage.
Maximum Bus Distance:
15,000
Device
1
Address:
Operating
Connections
3.7.4
that
tors
Modes:
Options:
(120.7mm
X
(2.8Kg).
feet
to 247
Modulated:
20
(4.5Km).
(Max.
Remote Terminal
MODBUSor Direct
32 devices/MODBUS).
Unit
(RTU) or ASCII.
EIA.
INDICATORS
On the front of the J474 interface
are four
indicate
the status of the communications.
have the following
functions:
III-42
LED indicators
These
indica-
RUN
On whenever DC power is applied
via the
484 mainframe
and the J474 diagnostic
routines
indicate
proper
internal
operation
of this interface.
ACTIVE
Flashes whenever the J474 interface
receives
a message
via the MODBUSor local EIA port that is
addressed
to
this unit.
474
ERROR
Flashes whenever an error in communications between
the 5474 interface
and the 484 CPU has been detected.
Appropriate
error response will
be sent to the
sending
device.
BUS
ERROR
Flashes whenever a message addressed to this device
from either
the MODBUSor
local
EIA port
has error
within
the message.
Appropriate
error
response
will
be sent to the sending device.
3.7.5 CONNECTIONS
The 5474 Interface
is connected to the MODBUSor
local
EIA
This connector
device via a single
30-pin connector.
(Buchanan
Part No. PCB 2B30A616798,
MODICON part
number S2-2109)
with
mounting bracket
(MODICON assembly
AS-4965)
is
supplied
with
the interface.
To service
the J474 unit,
this connector may be
removed without distrubing
MODBUScommunications
to
the
other
units provided physical
connections
are
not
distrubed.
Since
all options such as baud rate,
unit
number,
parity
and stop
bits are selected
by the wiring
of
this
connector,
easy
replacement and rapid restoration
of proper operation
are
accomplished without
extensive
testing
or
interruption
of MODBUS
InterDuring replacement
of the 5474 Communication
operation.
technician
does not need to set
switches
face, the service
dip
incorrect
address.
and possibly
set
the
or rotary
switches
shown in Table
including
Assignment of functi_ons are
111-3,
optional
decoding.
III-43
Table 111-3.
J474Functions
Pins
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Function
Pins
Protective
Ground
Data Transmitted
from J474
Data Received by J474
Ready to Send (RTS)
Clear to Send (CTS)
Data Set Ready (DSR)
Signal Ground
Binary Address 1
Baud Rate 1
Binary Address 2
Baud Rate 2
Binary Address 4
Baud Rate 4
Binary Address 8
Baud Rate 8
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Function
I
Binary Address 16
Stop Bit Option
Binary Address 32
Parity
Type Option
Data Terminal Ready (DTR)
Parity
Enable
Binary Address 64
MODBUSFULL Duplex In
Binary Address 128
MODBUSFULL Duplex Out
Signal Ground
Modbus Data in
Mode Select 1
MODBUSDATA OUT
Mode Select 2
rlote:
Pins 1 through 7 and 20 conform to EIA RS 232-C specifications.
tion
with
The following
illustrates
(Figure 111-25)
a typical
connecfor half duplex operation
at 9600 baud,
slave
number 26
even parity,
one stop bit,
and ASCII mode.
Figure111-25.
Typical J474 Connections
III-44
Baud rates are selected
by connecting
pins
to Signal Ground that is available
at pin 7.
the following
chart wil summarize all available
= connect to ground; no = leave unconnected):
9, 11, 13 and 15
For
convenience,
baud rates
(yes
Pins
Rate
9
50
75
110
134.5
150
300
600
1200
1800
2000
2400
3600
4800
7200
9600
19200
yes
no
yes
no
yes
no
yes
no
yes
no
yes
no
yes
no
yes
no
11
13
15
yes
yes
yes
yes
yes
yes
yes
yes
no
no
yes
yes
no
no
yes
yes
no
no
yes
yes
no
no
yes
yes
no
no
no
no
ves
yes
ves
yes
no
no
no
no
yes
yes
yes
yes
no
no
no
no
no
no
no
no
The slave address is established
by binary numbers on pins
to Signal
Ground
Connect
8, 10, 12, 14, 16, 18, 22 and 24.
(pin 26) for a zero bit and leave unconnected
for
a one bit.
00011010
which
requires
is
For example, address 26 in binary
of pins 24, 22, 18, 12, and 8 to pin 26 as shown in
connection
above example.
pins
Specific
modes of operation
are selected
by connecting
following
configur28 and 30 to Signal Ground (pin 26) in the
to
ground;
no = leave
unconation
(yes = connect that pin
nected):
Pins
Mode
28
30
ASCII
RTU
Not valid
Test
yes
yes
no
no
yes
no
yes
no
The remaining options
(stop bits and parity
are selected
by
on pin
7.
connecting
17, 19, and 21 to Signal Ground available
and their
options
available
summarizes
chart
The following
to
ground;
no
= leave
associated
connections
(yes = connect
unconnected):
III-45
Two
One
Two
One
Two
One
Two
One
stop
stop
stop
stop
stop
stop
stop
stop
Pins
19
17
Option
bits,
no parity
bit,
no parity
bits,
no parity
bit,
no parity
bits,
odd parity
bit,
odd parity
bits,
even parity
bit,
even parity
yes
no
yes
no
yes
no
yes
no
21
yes
yes
ves
yes
no
no
yes
yes
no
no
ves
yes
no
no
no
no
3.7.6 SELF-TEST
diagnostic
Upon power up, the
J474
conducts
an internal
CPU, ROM, RAM, Indicators,
test to verify
proper operation
of:
error
When the
Timers, Parallel
Bus.
Port, and Asynchronous
front
of
the
test is being performed,
the indicators
on the
indicators
indicators.
The four
J474 are used as diagnostic
will
cycle through the following
pattern
once on power up if
no
internal
errors are detected.
Indicator
12
RUN
ACTIti
484 ERROR
BUS ERROR
Off
Off
Off
On
Off
Off
On
On
3
Test
4
5
6
7
8
Off
On
On
On
On
On
On
Off
On
On
Off
Off
On
Off
Off
Off
On
On
Off
Off
On
Off
Off
Off
Each test pattern
lasts for appproximately
150 milliseconds
(total
1.2 seconds of power up tests).
If
an error
is
detected,
testing
stops and the indicators
can be used to
indicate the test level
that failed:
MODICON Field Service
personnel can correlate
the test
number to
the
internal
component
failure.
When the MODBUSconnector
is removed or if the
Internal Test Mode is selected
(pins 28 and 30 disconnected),
the
internal
Self Test will
operate
continuously.
The J474
will
halt its operation
when an error is detected
during
diagnostic
testing.
While in the Halt mode, no communications
with
the
MODBUSnor the controller
is possible.
The diagnostic
testing
can be restated
and possible
reactivation
of
communications
by
cycling
5474 ON-OFF-ON.
III-46
SECTION
IV
TROUBLESHOOTING
4.0
INTRODUCTION
The MODICON 484 Controllers
are rugged,
modular systems designed specifically
for
ments.
They require
no regular
maintenance.
components may be quickly
replaced.
failure,
are provided to indicate
proper
operation
subassemblies.
heavily
protected,
industrial
environIn
the
event
of
Indicator
lights
of
the
mainframe's
If a suspected failure
is
encountered,
there
are
several
customer
to
determine
procedures to be followed
by the
that
and to
there is a failure
in the MODICON system
isolate
that
failure
to a particular
assembly.
These procedures
are
outlined in this section.
no special
They require
test
equipAs basic understanding
of
functions
of
the
the
comment.
ponents is necessary.
b
The major troubleshooting
methods available
to the user
are
checkouts of the processor using the
programming
panel.
This
panel allows any network,
input,
output,
or register
to
be examined and changed in any proper manner desired.
Through the combination
of
logic
examination
and visual
inspection
or electrical
test of field
wiring
terminals,
failures may be isolated
to the processor,
I/O
module,
power sunply, or customer's
hardware.
The MODICON maintenance
philosophy is based on the assumption that when a major
subsystem
is
proved faulty,
it should be immediately
removed and replaced
in
its entirety.
This procedure greatly
increases
system
availability.
4.1
INDICATOR
LIGHTS
The mainframe has a series of three LED indicators
(Figure
Each LED is energized
when a major portion
of the
IV-l).
mainframe is operating.
AC power must be applied
will
function.
is
NOTE
to mainframe
before
any
LED
inIn addition
to the mainframe,
each I/O module has four
its
cirdicators
to show the field
voltage
status of each of
for
the
input
The controller
need not be functioning
cuits.
the
proper
The
only
requirement
is
for
indicators
to operate.
Output indicators
are on only when the
field
voltage
to exist.
controller
is in operation.
IV-1
TS-80-0005-2
Figure
4.1.1
IV-l. Indicators on Mainframe
POWER SUPPLY
The Power Supply is located
in the front cover of the mainIts proper operation
(output of both 5DCMF and 12 VDC)
frame.
mainframe.
As long
is indicated
by the DC POWERlight
on the
the
proper
supplying
as this LED is lit,
the Power Supply
is
volIf this indicator
is off,
verify
proper
voltages.
supply
the
With proper AC power voltage,
tage at AC power terminals.
and verOpen the mainframe
internal
fuses should be checked.
ify continuity
of internal
fuses (Figure IV-2).
operational,
are
If all internal
fuses
still
off,
and the LED itself
is operational,
should be replaced as follows:
the
the
(1)
Remove AC power from mainframe
(2)
Unlatch
(3)
Disconnect wiring harness and ground strap
supply side of mainframe
(Figure
IV-2).
connect ribbon cable at power supply.
and swing mainframe
IV-2
indicator
is
Power SUPPlY
terminals.
open.
from
Also,
power
dis-
(4)
Support power supply
(approximately
20
pounds)
and
lift
up to separate hinges that
connect
power supply
section
to fixed portion
of mainframe.
(5)
Remove power supply to work area
for
further
or packaging for shipment to MODICON for repair.
(6)
Reverse
supply.
steps
1
through
4
to
re-install
testing
new
power
DISCONNECT
HERE
FUSE
/
57-0006
FUSES (2)
57-0013
TS-80-0031-2
Figure I V-2. Power Supply - Location
IV-3
of Fuses
4.1.2
PROCESSOR
The main function
of the processor
is to monitor
the
staus
of all inputs continuously
and direct
the
of
all
status
outThere are two LED indicators
that,
puts.
when energized,
reThe
flect
proper operation
of
the
processor
(Figure
IV-l).
first
indicates
proper operation
of
the
processor
the
(RUN),
second proper battery
voltage
(BATT OK).
If the RUN light
goes out, and the DC POWER light
i.5
lit,
the processor has ceased operation.
the
processor
If
fails,
its .memory should be restored
by one of the peripheral
devices,
such as the model L206 Tape Loader
or model T158 Telephone
manual.
Interface.
These are discussed in Section II
of
this
I1dump" have
Center
If neither
a magnetic tape nor
a Service
been made, operation
of the controller
may be restored
by iniInitializing
tializing
memory with the P180 Programming Panel.
contains
memory will
restore
all logic to the null state
which
cannot
be restored
by
If the RUN light
no customer program.
the
processor
the appropriate
should
be
peripheral
device,
replaced as follows:
(1)
Disconnect AC power connections
at lower right of mainframe.
from
power
terminals
(2)
Open
(3)
Loosen the support of the mainframe at the bottom.
Do
the
mainframe
Support
not remove bolts
completely.
(33 pounds) and remove the upper bolts.
connectors
mainframe
and locate
(Figure
I/O
Disconnect
I/O connector(s)
on the end of
the
11-13).
into
I/O
I/O bus cable(s).
Remove from mainframe
the
I/O
If an I/O bus cable is used to connect
duct.
the
entire
housings at the bottom of
the
mainframe,
cable needs to be removed from the mainframe and saved.
NOTE
To reduct the weight of the
mainframe
to
the power supply section
may be removed
base section of the mainframe.
Lift
the mainframe
clear
12 pounds,
before
the
of bottom supports.
(4)
Take the mainframe to work area
for
futher
If necessary,
package and ship to MODICON for
(5)
Reverse
steps
1 through
3 to install
new mainframe.
The second indicator
for the mainframe
operation
OK. When this LED is energized,
there
is
sufficient
capacity
to retain
memory upon loss of AC power.
IV-4
testing.
repair.
is
BATT
battery
AC power is required
to operate BATT OK
Batteries
are designed only
troller
system.
They will
not run the controller.
indicator
retain
to
conor
memory.
When the RATT OK LED is not
illuminated,
check
the
POWER
If
not
illuminated,
replace batteries.
If illuminated,
LED.
verify
voltage at AC power terminals
at bottom
right
of
mainframe.
this
tain
battery
The BATT OK LED is a warning about
voltage.
capacity
to
indicator
goes off there is sufficient
memory for at least seven days.
When
main-
batteries
The following
procedure should be used when the
conIt is recommended that
AC power to
are to be replaced.
Memory will
be
troller
be left
on while replacing
batteries.
either
of
the
alkaline
lost if the AC power is removed while
when AC
Memory will
not
be lost
batteries
is not installed.
installed.
One
power is removed if either
lithium
battery
is
lithium
battery
is sufficient
to retain
memory. ,
TS-80-0032-2
Figure IV-3. Memory
Module
IV-5
with Batteries
Procedures for replacement
of alkaline
are basically
the same and are as follows:
or lithium
and
locate
(1)
Open mainframe,
swing out
memory board (Figure IV-3).
(2)
remove ONE
If both battery
holders contain batteries,
alkaline
Remember
that
one
to create a vacant holder.
battery
is insufficient
to maintain
memorv without
AC
power.
(3)
Insert
0
0
new battery
into
power
batteries
vacant
holder
as follows:
Lithium batteries
are inserted
with
.positive
red wire towards center.
Alkaline
batteries
are inserted
with positive
red wire towards left
side.
CAUTION
REVERSE POLARITY WILL CANCEL VOLTAGE OF
TERY AND ELIMINATE BATTERY SUPPORT.
RED
;q:/+
RED
i)j?E
El
CONNECTIONS
E3
FOR LITHIUM BATTERIES
BLACK
CONNECTIONS
EXISTING
RIGHT HOLDER
LEFT HOLDER
TS-80-0017-1
SUPPlY,
RED
FOR ALKALINE BATTERIES
Figure I V-4. Wiring of Batteries
IV-6
BAT-
(+)
(+)
(4)
Connect wires
board (Figure
0
0
slide
to
IV-4).
terminals
on
Rev.
C
memory
Lithium batteries
supplied
with
wires
are
for
Place batteries
in holders
and conconnection.
nect red
wires
to
center
terminals
and black
wires to terminals
towards side of
memory board.
Connect
jumper
between
terminals
below
right
holder.
batteries
Alkaline
are
placed
in
spring
clip
holders.
No wires are supplied
with
these
batteries.
To connect
these
batteries
in
series,
jumper is placed
between
terminals
El
and E3.
Connect only one jumper either
below right
holder
or between holders depending upon battery
type.
(5)
Remove the second old battery
from its
holder
batteries
are in the controller.
Replace
with
new battery
following
steps 3 and 4 above.
(6)
Record battery
vided.
(7)
Verify
operation
of
BATT OK indicator
mainframe and then close mainframe.
(8)
If BATT OK indicator
is not
illuminated,
replace
LED
lamp, or power supply, or memory board (Figure IV-6).
change on memory
board
in
if
two
second
space
on
front
proof
Memory boards
can be removed,
stored,
transported,
and
exchanged without loss of memory as long as the
batteries
are
inserted.
There is no indication
of battery
level
when
except
installed
in controller
with AC power applied.
Memorv sizes
of
any controller
can be changed by replacing
the board.
4.1.3
INPUT/OUTPUT
SECTION
Communications from the mainframe to the real world
is
acall
inThis section
isolates
complished via the I/O Section.
put and output devices to prevent external
noise from affecting
The circuitry
the internal
logic of the 484 Controller
system.
filter
inputs
and
in the I/O Section is specially
designed to
compatible
with
user's
levels
the
voltage
drive outputs at
placement
of
the
There are no limitations
on the
equipment.
handling
their
voltage
modules in the I/O Section relative
to
AC circuits
do not have to be isolated
from DC circapacity.
be separated
cuits nor do high voltage
(i.e.,
220 VAC) have to
from low voltages
(i.e.,
5 DCMF).
Whenever a failure
following
steps should
failure:
is suspected
be taken
to
IV-7
the
in
I/O
systematically
Section,
locate
the
the
(1)
Call
SINGLE I/O CIRCUIT - Connect Programming Device.
(0XxX reference)
up input (1XxX reference)
or output
its
compare
When it is an input,
that is suspected.
modinput
the
status with that of the indicator
of
and
operational
input
is
the
agree,
If they
ule.
field
wiring external
device should
be examined.
If
not, the input module should be replaced.
NOTE
When possible,
cycle
switch,
pushbutton etc.,
tion.
device
such as
input
ON/OFF/ON to
confirm
limit
opera-
with
When it is an output,
its
status
that
compare
If they agree, the
output
indicated
on output module.
device
is operational
and the
field
wiring/external
should
If not, the output
module
should be examined.
is
not
being
Verify
that a blown fuse
be replaced.
indicated
at output module before replacing
module.
NOTE
When possible,
use DISABLE function
(Paragraph
3.1.5)
to force output ON/OFF/ON etc.
MEMORYPROTECT must of
OFF.
CAUTION
BE VERY CAREFUL THAT OUTPUT WILL NOT CAUSE UNSAFE USER
EQUIPMENT OPERATION.
(2)
MULTIPLE I/O CIRCUITS - Connect Programming
appropriate
verify
I/O operation
and select
from the following:
0
0
Device
to
procedure
power supplied
to
ON ONE MODULE - Verify
proper
module.
If
replace
If voltage exists,
module.
not, troubleshoot
field
wiring and power source.
WITHIN ONE I/O HOUSING -
CAUTION
MAIN AC POWERTO 484 SYSTEM SHOULD BE REMOVED FIRST.
DO NOT REMOVE CABLES WITH POWERON 484 MAINFRAME.
00
bus connector.
Open I/O duct and reseat I/O
If this does not
correct
fault,
use spare
rotating
connectors
withI/O bus connector,
in duct as necessary to move spare
connector
to desired housing.
IV-8
from susRemove I/O modules one at a time
continues.
If
fault
housing
if
pected
faulty
module begins to operate when an I/O
that
module and
module is removed, replace
inspect
its connector on housing backplane.
00
when
backplane
its
Replace I/O housing
or
does not
correct
removing all I/O
modules
fault.
TS-80-0033-2
Figure I V-5. J471 Expander Ins talla tion
0
MULTIPLE I/O
00
00
HOUSINGS-
faulty
housings
Remove top I/O module
from
address.
Only
one
and verify
selection
of
switch should b positioned
on any housing
(Figure 11-14).
Reset
all
switches
if
no
obvious errors are detected.
bus connectors
Open I/O duct and remove I/O
from suspected housings one at a time if
the
Reconnect
in
the
same
fault
still
exists.
order
examining
I/O
operation
with
while
If one housing
creates
programming device.
the fault
only when connected to the bus,
it
or its backplane should be replaced.
IV-9
00
(3)
one
Remove the entire
bus cable,
Replace in same order,
at a time.
for a faulty
I/O housing.
Finally,
entire
I/O bus cable.
connector
searching
replace
(Figure
OTHER I/O DEVICES - The model J471 Expander
disIV-S) is maintained
similarly
to the power supply
cussed above.
structure
can be troubleshot
Its I/O
following
the procedure listed
above.
I/O
bus communiAll I/O modules are parallel
to the
all I/O data is seen by each modtherefore,
cations,
modules
ule via the I/O bus cable.
appropriate
Only
expanded
This includes local
or
respond to the data.
I/O's
as well as register
modules.
Register
register
I/O
housings.
B547/B458 are
dressing selection
is accomplished on the register
module.
4.2
adI/O
FAULT ISOLATION FLOW CHARTS
This part of Section IV contains
five fault
isolation
These are designed for use by MODICON customers.
charts.
vice personnel recommend users attempt to isolate
faults
calling
MODICON service center.
The fault
isolation
flowcharts
flowSerbefore
are as follows:
Figure
IV-6.
DC POWERLamp Fault
Figure
IV-7.
BATT OK Lamp Fault
Figure
IV-8.
RUN Lamp Fault
Figure
IV-g.
RUN Lamp Fault Isolation
FLowchart
(Continuation
of A from Figure IV-8)
Figure
IV-lo.
I/O
Section
IV-10
Isolation
Isolation
Isolation
Fault
Isolation
Flowchart
FLowchart
FLowchart
Flowchart.
4.3
P180 ERROR MESSAGES
All P180
alphabetically
error messages are detailed
here and are
after
the 484 Error Code is described;
organized
There
are
Many errors are caused by illegal
user actions.
also a number of SYSTEM ERRORS which seldom appear
in
a funcsystem
However, if SYSTEM ERRORS do occur, the
tioning
system.
may be in serious difficulty
and needs to be serviced.
The following
484 which indicate
list
it
of SYSTEM ERRORS are
has received
erroneous
1
2
3
4
5
6
17
12
15
messages from
information:
the
'PARITY ERROR'
'OVERRUN ERR'
'CHKSUM ERROR'
'BAD ADR RNGE'
'ILLEGAL ADDR'
'ILLEGAL NODE'
'BAD LED REQ'
'BAD COMMAND'
'BAD LENGTH'
the
The following
list
of SYSTEM ERRORS are
messages from
P180 which indicate
that it has received
erroneous information:
'BAD RESPONSE'
'P180 OVERRUN'
'P180 PARITY'
'P180 CKSUM'
'P3 PARITY'
'P3 OVERRUN'
'P3 CKSUM ERR'
4.3.1
484 ERROR CODE
This
an error
followed
following
message appears when P180 is in supervisory
status
484.
The message will
has been detected
in the
by a two-digit
number code indicating
error type.
list
contains
the error codes and their meanings:
Code
Definition
Communications Overrun
Memory Checksum Failed
Invalid
Node Type Found
I/O Port Error
Scratchpad Diagnostic
Failed
-Fatal-No
Run Light
Coil RAM Checksum Failed
CPU Diagnostic
Failed
IV-16
and
be
The
10
11
12
13
14
Illegal
Memory Configuration
-Fatal-No
Run Light
Real-Time Clock Not Functioning
Watchdog Timer Expired
Illegal
Column Detected
No End-Of-Logic
Node
4.3.2 ERROR MESSAGES
message comes from
BAD ADR RANGE - In general,
this error
Pl80
I/O
rethe 484 mainframe and means that the most recent
Specifiquest has a serious problem and cannot be processed.
which
a request
cally,
this message means that the P180 sent
address boundary.
would modify memory across an invalid
484
has
this
not
the
this error message comes from
BAD COMMAND- In general,
mainframe and means that the most recent
P180 I/O
request
be processed.
Specifically,
a serious problem and cannot
message means that the request code which the P180 sent
is
valid.
the
this error message comes from
BAD LED REQ - In general,
request
484 mainframe and means that the most recent
P180 I/O
Specifically,
be processed.
has a serious problem and cannot
Status"
this message means that the P180 sent
a bad "Element
power request.
this error message comes from
the
BAD LENGTH - In general,
mainframe and means that the most recent
P180 I/O
request
be processed.
has a serious problem and cannot
Specifically,
this message means that the I/O request which the ~180 sent
had
too few or too many characters.
484
BAD RECORD - This message appears during LOAD, DUMP,
when the tape being processed has the wrong information.
VERIFY
BAD RESPONSE - This message appears when the
P180 has
ceived a response from the 484 but is is so erroneous it is
recognizable.
The P180 and/or 484 are in
serious
trouble
should be diagnosed.
BAD SHIFT - The 'SHIFT'
is meaningless.
key was set
for
a key for
which
reunand
it
BAD TAPE - This message appears during loading or
verifying
when the tape does not contain the information
expected
to
be
on a good tape.
BLANK NODE - This message appears when the
user
the
cursor
to 'DELETE' a node which is not there or
The cursor must be on a real
node in
blank node.
delete
it.
IV-17
i s trying
is
on a
order
to
BLANK OR
This
message appears
when the
user
entering
a new node, but the node above
(up-arrow)
or
to
left
(left-arrow)
is blank.
This is illegal.
BY-PASS I/O - When the user enters registers
4059
this message will
warn the user that
these
registers
versed.
This is a warning message only.
The P180
stop the user from using them.
’
t:Z
or
4060,
reare
will
not
CHECKING - Although this
appears
in
the
error
line,
merely tells
the user that the P180 must spend time checking
see if a coil is used.
This may take several
seconds.
It
displayed
to let the user know that the P180 is still
alive.
it
to
is
CHKSUMERROR - In general,
this
error
message comes from
the 484 mainframe and means that the most recent
P180 I/O
request cannot be processed the way it
was sent.
Specifically,
this message means that the message from the P180 was received
incorrectly.
THe 484 is not in agreement with the P180 message.
COIL IN WAY - This error message will
occur when any multinode item is entered and a coil
extension
is
below
it.
Although the coil may be below and to the left
of
the
multi-node
to be entered,
the display
position
of the coil
across
extends
the screen.
This prevents any multi-node
from extending
below
the coil.
COIL IS USED - This message means that the coil the user
is
programming is already used as a coil or in a convert.
No coil
may be programmed as an output more than
once.
Converts
take
1.2 coils even though only one number appears
on the
display.
If the user has a convert to coil 15, this uses coil 15 through
26.
Later programming to coil 17, for example, will
show USED,
even though search and display
finds NO MATCH.
COIL NO-MATCH - This message appears during VERIFY when the
coil bits on tape do not match those of
the
484.
This
error
may be disregarded
if verifying
while running.
COMMBUSY - This message does not appear on the
error
line
and is not strictly
an error.
It is
displayed
when the
P180
wants to communicate with a 484 but some other
device
is
already communicating.
The P180 waits.
END OF LOGIC - This message means that
call up a network beyond the last network.
end of the logic.
tried
user
the
The user is
at
to
the
484 RUNNING - This message appears when the user
is
trying
to perform a function
which requires
that
the
484 be stopped
first.
(Example:
Clear Memory)
IV-18
ILLEGAL ADDR - In general,
this
error
message comes from
the 484 mainframe and means that the most recent
P180 I/O
request cannot be processed.
Specificallv,
this
message means
that the P180 sent an address which is completely
wrong.
ILLEGAL NODE - In general this error message comes from
the
484 mainframe and means that the most recent
P180 I/O
request
cannot be processed.
Specifically,
this message means that
the
P180 sent a node type which is not known by the 484.
ILLEGAL RPLC - This
message appears
when the
user,
for
ENTER, is trying
to change one node type
another
and
change is not allowed.
These changes are listed:
via
the
1 node for 2 or 3 nodes
2 nodes for 1 or 3 nodes
3 nodes for 1 or 2 nodes
INCOMPLETE - This message means that the assemply area
is
not completely
explicitly
set for 'ENTER'.
When programming
a
new node, all three fields
(contact,
reference,
vertical)
must
be stated.
The left-pointing
arrow directs
the eve to
the
assembly area.
INIT MEM - This message appears when the P180 fails
to
the end-of-logic
mark in the 484.
It means that there
is
serious problem in the 484 and the database is
not
valid.
to SUPERVISOR and "clear memory".
find
some
Go
INV - These three letters
do not appear in the
error
line.
discrete
when the
area
They show as register
contents in the
data in the register
is INValid,
i.e.,
exceeds 999.
appears
in
SUPERVISOR mode for
INVALID KEY - This
keys
which are invalid
in that mode only.
If the message appears
in
network display mode, it means that the P180 keyboard
hardware
has failed.
INVALID # - This message appears when the
reference
number
invalid
for
the
in the assembly area is
requested
function.
Check the memory size and reference
rules.
LGC NO-MATCH - This message appears during VERIFY when
network logic
(LGC) on the tape does not match the logic in
484.
the
the
MEMORYFULL - This message appears when the user enters
formation
and the 484's logic memory is full.
in-
user
is
modMEM PROTECT - This message appears when the
MEMORY
ifying
the 484 memory and the MEMORYPROTECT key is ON.
PROTECT key ON prevents modifications.
IV-19
MUST BE COIL - This message appears when the
gramming a non-coil
node in the coil
(right-hand)
allowed
in
are
"coils"
and "horizontal
open"
column.
user
is
procolumn.
Only
right-hand
the
NO ANSWER- This message appears when the P180 makes
Check cables and
quest to the 484 and gets no response.
484 functioning.
a reproper
iS
user
NO COIL HERE - This message appears when the
gramming a coil which would be in the middle of the logic.
pro-
enteris
NODE IN WAY - This message appears when the user
another
node to
the
contains
ing a coil and the row already
cursor
when the
Remember that the coil may be entered
right.
rest
It then takes the
is not in the coil
(right-hand)
column.
of the row for display
purposes only.
when entering
a twoNODE TOO LNG - This message appears
item
counter)
on the last row of a three-node
node item (e.g.,
long
to
The function
is
too
on the next-to-last
or last row.
fit
in the seven row network.
'SEARCH' when the
during
NO MATCH - This message appears
for.
searched
484 cannot find a match
to
the
pattern
being
function,
implicit
in
Searching for a coil or register
e.g.,
CONVERT, MULT, DIV, shows no match even though it is used.
is
when the
user
NO NETWORK- This message appears
forming a function
on a network and there
is
no network
played or in 484 memory.
perdis-
NOT 1XxX - This message appears when the user is forcing
an
item displayed
in the descrete
area which is not a 1000 series
Only 1XxX references
can be forced in this area.
(input)
coil.
NOT ALLOWED- This message appears when the user is
a reference
in the discrete
area and the cursor is not
The cursor must be in the discrete
area to GET.
area.
getting
that
in
tries
NOT DISABLED - This message appears when the user
Disable
This is illegal.
‘FORCE' a coil which is enabled.
coil first
before forcing.
to
any
trving
NOT ENHANCED- This message appears when the user is
to program a function
which is not allowed in the basic 484.
is
prouser
NOT ENHAN II - This message appears when the
the
enhanced
or
allowed
in
gramming a function
which is not
basic 484.
IV-20
NOT LAST - This message appears when the user
node which is in the middle of a network.
Delete
done to:
(1)
(2)
is deleting
may only
The last
(bottom) node in a column, or
The last node if it is in the top row, the
most node onlv.
a
be
right-
is
NOT VERTICAL - This message appears when it
illegal
have a vertical
short on a node tvpe; a coil,
for example.
is
ONLY 4XXX - This message appears when the user
data into an item displayed
in the discrete
area and it
a holding register
(4XxX).
to
entering
is
not
OVERRUNERR - 'In general,
this error message comes from
the
484 mainframe and means that the most recent
P180 I/C
request
cannot be processed.
Specifically,
this message means that
the
484 receiver
filled
up with characters
which were not
processed
out quickly
enough so they got lost.
This condition
light.
will
NOTE
cause
the
484
to
lose
its
RUN
from
P180 CKSUM - This message means that the response
the
with
484 was received
incorrectly
and the P180 does not
agree
what the 484 sent.
This could be a problem in the link
between
the 484 and P180 or a serious failure
in either.
P180 OVERRUN- This message means that
This
is
hardware filled
and overflowed.
The P180 should be checked.
P180.
the
P180
a failure
receiver
of
the
P180 PARITY - This message means that the P180 receiver
tected a bad bit stream.
The P180/484 should be checked.
de-
P3 CKSUM ERR - This message means that the message from
device on port 3 was received
incorrectly.
The P180 does
This could
be a problem
agree with what the device sent.
the link,
the P180, or the device.
the
not
in
3
P180 port
is
a failure
reof
P3 OVERRUN- This message means that the
This
ceiver
hardware filled
and overflowed.
The P180 should be checked.
the P180.
the
P180 port
P3 PARITY - This message means that
stream.
The
P180
and/or
ceiver detected
a bad bit
should be checked.
IV-21
3 redevice
error
message comes from
PARITY ERROR - In general,
this
P180 I/O
rethe 484 mainframe and means that the most recent
indithis
message
Specifically,
quest cannot be processed.
cates that the 484 message receiver
hardware detected
a bad bit
stream.
user
PORT 3 EMPTY - This message appears when the
or
VERIFY
and
has
not
plugged
in
forming a LOAD, DUMP,
device.
peris
a legal
message does not
POWER/LED INVALID-NETWORK SKIPPED - This
strictlv
an error.
It
appear on the error line.
It is
not
displays
whenever the current
network on the
display
is
being
skipped due to the skip command.
REG NO-MATCH - This message appears during VERIFY when
This error may be disregarded
tape does not match the 484.
verifying
while running.
SPARE KEY - The key which the user has struck
has
no
the
if
func-
tion.
user
tried
a
START FAILED - This message appears when the
would
not
shows that
it
START function
but the
484 status
start.
There is a serious problem in the 484 mainframe.
NOTE
revisi_ons
In earlier
releases
of P180,
message was FCN FAILED.
START LOGIC - This message means that
oell up a network before the first
network.
at the start
of his logic.
A
&
B,
the
user
Therefore,
STOP FAILED - This message appears when the user
a STOP function
and the 484 status shows that it did
There is a problem in the 484.
See START FAILED;
TAPE> 484! - This message appears when the
a smaller 484 with a dump from a larger
484.
user logic in the larger
is more than the size
The P180 tries
to load larger
to smaller
and
the amount of memory actually
programmed in the
fit
in the smaller 484.
this
tried
his
has
not
to
is
tried
stop.
loading
user
is
The amount of
the
smaller.
of
will
succeed
if
larger
484 will
257=BATT OK - This message appears when the user
is
trying
the
Since
this
is
to program a coil
with
reference
W257.
"BATTERY OK' coil,
is is already used and may not be programmed.
UNK CONTACT - This error message appears when
reading a network and finds a node type which
is
means a serious problem in the 484.
IV-22
the
P180
invalid.
is
It
is
trying
VERT IN WAY - This message appears when the user
to program a coil when the cursor is not in the coil column and
the
right
there is a vertical
short coming down immediately
to
down
to
shorts
the
There may not be vertical
of the cursor.
right of the coil.
c
IV-23/IV-24
SECTION V
SERVICE CENTER
5.0
INTRODUCTION
MODICON Headquarters
A Service Center is maintained
at
Maintenance
assistance
is available
Andover, Massachusetts.
hours a day, 365 days a year.
in
24
Several data telephone
lines,
support computers, and extenmanufactuered
by MODICON are
controllers
sive files
on all
Center's
capabilTo make maximum use of the Service
offered.
This
must be available.
Interface
a T158 Telephone
ities,
Further,
J470 Adapter.
interface
connects to the 484 via the
the
directly
to
these allow support computers to
communicate
controller.
For further
information
capabilities
and customer
office.
5.1
about
options
Center
the
MODICON Service
contact
any MODICON sales
FORMS
Necessary support forms will
Sales Office
or Service Center.
v-1/v-2
be available
from
anv
MODICON
SECTION
VI
500 SERIES l/O DEVICES
6.0
INTRODUCTION
This section describes
the discrete
T/O modules,
and their
associated
housings, which form
I/O devices,
the 500 Series I/O System.
register
part
of
The 500 Series I/O System is designed to provide a low proand highly modular I/O system, at a low cost-of
reliable,
file,
circuits
is
equivaPerformance of user side I/O
goods sold.
lent to the high-performance
attainable
with similar
200 Series
for
designed
compat500 Series I/O Modules are
I/O devices.
Modules
and with 200 Series I/O
ible operation
with each other,
of the same type.
The overall
I/O system is designed for direct
connection
to
interface
By using
a suitable
the 484 Series of controllers.
384,
and 584
184,
assembly, the system may also be used with
Controllers.
which
conThe discrete
I/O modules plug into I/O housings
interface
and which
tain the user wiring terminal
connections
two sizes
There are
the I/O modules to the controller
svstem.
modules,
and
one to
eight
B545,
of I/O housings available:
13546, one to four modules.
duct
(WSSX).
A
The I/O housings are connected to an I/O
Choice
depends
on
the
variety
of these ducts are available.
intercommunication
mechanical
The duct forms the
system size.
support
among the I/O housings and the controller
and serves to
and shield the I/O bus cable assembly.
128
input
points
An I/O channel consists
of a maximum of
or a total
of 256 Input/Output
points
or
and 128 output points,
three
An I/O channel can be driven by any one of
64 modules.
484 Discrete
I/O
Expander,
or
484 Controller,
possible
units:
J540 184/384 Adapter.
A 484 Controller
equipped with an optional
I/O expander
control
a maximum of 256 inputs and 256 outputs for a total
512 I/O points.
An Input/Output
point is referenced
a number which depends on:
on the module it
by the
(1)
Which point
bottom).
(2)
Which module on the I/O housing is involved
1
8, top to bottom on 8 module housings;
top to bottom on 4 module housings).
VI-1
is
programmer
(1 through
4,
top
mav
of
with
to
(I
through
through
4,
(3)
Which I/O houing select
that I/O housing.
code
has
been
selected
for
user
for
points
Each module has eigth terminal
connection
Each terminal
connection
point can accomodate up to
2
wiring.
#12 wires.
User wiring is fed to these connection points via
a
the
from underneath
wiring tray provided in each I/O
housing
system.
conmodules
Data is transferred
between the I/O
and the
twelve-volt
data
bus.
open-collector,
troller
via an a bit,
the
controller,
When an input module pair is selected
by the
electroninput data is applied through the signal-conditioning
When an output
module
ics directly
onto the a-bit
data bus.
bus is
the
data
on the
pair is selected
by the controller,
where outloaded into storage latches on the output
modules,
puts are controlled
until
updated.
supplied
I/O
modules
is
All opto-isolator
power in
the
controlled
by
This
power
is
through an indipendent
power bus.
a problem
(lack-ofthe controller
such that in the event
of
opto-isoshut
the
off
line power) the controller
will
first
the
shutlator
power.
This forces all outputs off as part of
repower will
down procedure.
On start
up, the opto-isolator
over
the
main off until
the controller
has established
control
outputs.
The height of an installed
a-module housing and duct
is
32
runs.
The
inches.
Additional
room must be provided for
wire
height of an installed
d-module housing is 18 inches.
Each I/O
housing requires
5 inches in mounting surface width.
NEMA
cabinets
The I/O system will
operate in standard
internal
ambient air temperatures
from 0 to 60" centigrade
convection
vided that nothing restricts
the free
flow
of
currents.
Table VI-1 shows the
conditioning
signal
Input/Output
Module terminal
assignments
are
VI-2.
VI-2
and
proai r
module options.
shown in
Table
Table VI-l.
Signal
Conditioning
Module
Options
Color Code
Model
B550
E551
B552
B553
B554
B555
B556
B557
B558
B559
B560
B561
conditions
conditions
conditions
conditions
conditions
conditions
conditions
conditions
conditions
conditions
conditions
conditions
115 VW outputs
115 VAC inputs
9-56 ViX outputs Universal DC Module -True High*
9-56 VDC inputs Universal IX Model -True High*
220 VAC outputs
220 VAC inputs
5 VITJL outputs
5VITL inputs
9-56 VTX outputs Universal JX Module -True Low*
9-56 VIX inputs Universal W Module -True Low*
go-150 vlx outputs
go-150 WC inputs
red
pink
dark blue
light blue
orange
melon
violet
light purple
turquoise
blue
blue
blue
* The term "True High" means that the controller
sees the input as "True" (ON) when the input is
Using true high input module, the input device (outside the controller)
should
"High" (+vDc).
bewiredto
the+vDc source. The sametermin ology is used for outputs but in this case the
output device (outside the controller)
is wired to the -KC (or grounded) since the switching
(inside the &ule)
is done on the "High" line of the source. The "True Low" modules are vice
versa.
Table VI-2. Input/Output
Terminal
Module
B552-Ttue High
B558-n-ue iTm
a3cxrmurS
Terminal
Assignments
B553-True High
B559-True Lmd
LKINPurS
B556
TrL
CurPm
B557
m
EawTS
B560
120 m
DC IN (+)
Ix: IN (+)
DC IN (+)
oL?rPur1
GRXJFJA
DclurrURN
ix!lxrUFNlx~
CUIPWl
INFWl
CXPWl?l
INPUFl
cx.?wur2
INPwJ!2
ourPur2
INPur2
RETURN2
NOT USED
NDT USD
NOT USD
CmPur3
BSSO-115 VAC
B554-220 VAC
PcCumurS
B551-115 VAC
B555-220 VAC
ACINPUE
XIN
ACIN
Ix IN (+)
GRXJPA
INPUT1
GFxXJPA
M!RExum
GRXIPA
ACREmEN
!xTFumJFN
INpvpl
B561
120 vlx
INPUTS
7
1
2
m IN (+)
INPKCl
IxFtmTJFa
KETURNl
INPUT1
I..wPm
ml
INPLrr2
wrPwr2
EWur2
ourPur2
ACM
ACIN
m3
lx IN (+)
ACRFIURN
Ix:mmRN
INPUr3
GKXJPB
NOT USED
NOT USD
NOT USD
RErUF?N3
curPur3
INPm3
cxnTur3
lNPw3
mwr4
oumur4
INwr4
GurPLrr4
mPur4
l?EmRN4
GF0UPB
ACRImum
GIlMlPB
mPLrJT2
rcIErrJm
IcIJEzmmI
4
.
DC IN (+)
ACIN
3
INPur2
Ix IN (+)
GKXPB
INPwr3
LxFzlmUm
INPur3
IaMPcLxMKN
Ix: IN (+)
ACIN
7
cxTrPur3
m4
KYzFcEmJRN
ACKErUFm
8
cxnPLrr4
INPur4
INPLrr4
VI-
3
lNPur4
DISCRETE
6.1
l/O SYSTEM
The Discrete
System has the following
major
features:
4 points
per module.
Fits in an 8-inch deep NEMA cabinet.
anv
distrubing
without
replaceable
Module
easily
wiring.
front
the
User wiring connections
easily
available
at
of the system.
2
812
accept
up to
Each user connection point will
wires.
Active indicator
(LED) on each point.
Output active
indicators
are on Load side.
Each output point is fused.
Each output point has an open fuse indicator.
AC output points turn on at zero-crossing.
approximatelv
'at
point
thresholds
Each DC input
one-half
the supplv voltage.
Each input point is filtered
for spike rejection.
Each input and output point is optically
isolated.
.I/0
the
are
provided
on
surfaces
Labeling
User
housings.
0
0
0
0
0
0
0
0
6.1 .l
I/O
MODULES
B550
115
VAC OUTPUT MODULE
sigthe
The MODICON B550 115 VAC Output Module conditions
115
independent
nals used internally
in the controller
to four
and
starters
solenoids,
motor
VAC outputs capable of driving
the
The four output circuits
in
other loads up to two amperes.
two
contains
Each group,
module are divided
into two groups.
This module can be reoutput circuits
and is fully
isolated.
two
in
Module
a group
of
ferred
to as an Isolated
Output
Each
Different
115 VAC sources can drive each group.
points.
the
user
module uses four triac
devices to switch the loads of
supplied VAC line.
varisSelf contained
damping networks and voltage limiting
triggering.
false
tor suppress line voltage
spikes and prevent
cirEach output circuit
is provided with a fuse to protect
its
cuitry
from overload current
(Figure VI-1 and VI-2).
Electrical
Characteristics:
Load Current:
OFF Current:
ON Current:
5MA max.
each
for
2 amps continuous
output (8 amps oer module).
VI-4
1OmA
0.5mA
15 amps maximum for 10 ms.
5 amps maximum for 100 ms.
(one fuse
5 amps normal blow
per output).
Recommended minimum Load:
ON Holding Current:
Inrush Load Current:
Fuse Rating:
Load Voltage:
Working Voltage:
Transient
80 VAC to 130 VAC continuous
40 to 70 Hz.
15OV max for 10 seconds.
(varis200 V max for 1 cycle
tor limited).
Approximately
1 VAC at 2 amps
current.
Working 200 VAC, 1500 max for
10 ms.OFF to ON 0. 3 to 10 ms max.
8.3
ms max
ON to OFF 0. 3 to
(at 60 Hz).
for
provided
A neon lamp is
The lamp will
each output.
be ON when output is ON.
for
provided
A neon lamp is
The lamp will
each output.
be ON when the fuse is blown.
Voltage:
ON Voltage
Drop:
CommonMode Voltage:
Response Time:
Output
Status
Indicator:
Fuse Indicator:
Compatibility
Modules:
with
input
interThe R550 is capable of
with
the MODICON
connection
B551 and B231 115 VAC Input
use of
without
the
Modules
additional
components.
AC HOT
FROM
OPTICAL
COUPLER
5A
Figure
VI-l. B550 115 VAC Output Module
Simplified Schema tic
VI-5
OUTPUT
TS-80-0023-1
TERMINAL
TYPICAL
NUMBERS
OUTPUT
REFERENCE
HOT GROUP A
LAMP COMMON
GROUP A
0001
OUTPUT
1
0002
OUTPUT 2
HOT GROUP B
LAMP COMMON
GROUP B
0003
OUTPUT 3
0004
OUTPUT 4
TS-80-0024-1
Figure V/-2.B550 115 VACOutput Modules
Terminal Numbering and Connections
B551 11.5 VAC INPUT MODULE
(Figure
VI-3
and
Module
The MODICON B551 115 VAC Input
draws
Each input
VI-4)
contains
four 115 T7ACisolated
inputs.
current
to inhibit
the buildup on contamisufficient
"wetting"
pushbuttons,
used in
contacts
nants on the surface of silver
signal
reThe input
limit
switches,
pressure switches,
etc.
quirements
for each of the 4 inputs are as follows:
Electrical
Characteristics:
Input at high level.
(neon
indicator
ON
Input
lamp).
Controller
input ON.
Input voltage greater
than
80
130 VAC
than
VAC and less
impedance
Source
continuous.
less than 1K ohms.
40 to 70 Hz.
level
or open
.lOW
Input at
OFF
Input indicator
circuit.
Controller
in(neon lamp).
put OFF.
voltage
less
than
48
Input
VAC or less than 150 VAC with
than
source impedance greater
4OK ohms. 40 to 70 Hz.
ON Condition:
ON level:
OFF Condition:
OFF level:
VI-6
60 VAC.
Approximately
at
Approximately
16;K ohms
working frequency.
Approximately
8 mA at 115 VAC.
200 VAC steady state
(60 Hz),
1500V for 10 ms.
150 VAC for 10 seconds.
200 VAC for 1 cvcle (16.7
ms.
at 6OHz).
OFF to ON 10 ms. max.
ON to OFF ms. max.
Switching Level:
Input Impedance:
Input Current:
CommonMode Voltage:
Maximum Input
Voltage:
Response Time:
Compatibility
modules:
with
output
The B551 is capable of
interconnection
with
the
MODICON
B550 and B230 115 VAC Output
Modules
without
the
use of
additional
components.
Q
7.5K
510
r-
---
1
L
___
_
I
66_
OPTI CAL
COUPLER
TS-80-0025-l
Q CHARACTERISTICS
i/
Figure
VI-3. B551 175 VAC Input Module
Simplified Schema tic
VI-7
TYPICAL
TERMINAL
INPUT
NUMBERS
REFERENCE
INPUT
1
1001
INPUT
2
1002
INPUT
3
1003
INPUT
4
1004
TS-80-0028-1
Figure
B552
W-4. B551 115 VAC Input Module
Numbering and Connections
Terminal
UNIVERSAL DC OUTPUT MODULE (TRUE HIGH)
The MODICON B552 Universal
Module
(True
High)
DC Output
(Figures VI-5 and VI-6)
converts the signals
used internally
in
the
capable
of
controller
to
four
independent
DC outputs
solenoids
of
driving
relays,
pilot
lamps, motor starters,
any
other
load
up to
2 amperes.
The module
uses transistor
The
switches to control
loads connected to the user DC source.
four output circuits
are divided
into two groups
of
two cireach
can be used for
Two different
VDC sources
cuits each.
group.
The "True High" output module requires
user
The positive
VDC is
to the negative
VDC source.
to the module since the "hot" line is
switched
For lamps common, the negative VDC is
logic.
rectly
to the module.
connection
load
directly
wired
module
by the
wired
dialso
Self-contained
transient
clamp diodes
suppress
when inductive
loads are driven.
Each output circuit
to protect
its circuitry
against overload currents.
cators are provided to indicate
ON status
for
each
well as separate LED's for blown fuse indication.
Electrical
voltages
fused
is
LED indioutput
as
Characteristics:
Load Current:
OFF Current:
Steady State
5 mA max.
2 amps per output
four outputs).
ON Current:
VI-8
(8 amps
for
10 mA.
7 amps max for
5 amps max for
S amps, normal
output.
Recommended Minimum Load:
Inrush Current:
Fuse Rating:
Load Voltage:
Working Voltage:
Peak Voltage:
Output Voltage
Bias Current:
10 ms.
100 ms.
blow per
each
9
to
56
VDC
(different
sources can be used for
each
group to two outputs
in
one
module).
max.
3_.2 VDC at 2 amps.
Each source (two required
module)
should
provide
following
current:
60
Drop:
VDC
Source
Voltage
_I_P
24 VDC
56 VDC
per
the
outputs
- OFF
outputs
ON -
6 ma
13 ma
26 ma
32 ma
NOTE
of
If one source provides power to both pairs
be
doubled
the
above
values
should
on a module,
tain the correct
load for that module.
outputs
to
ob-
200 VAC steady state.
15OOV for 10 ms.
OFF to ON 1 ms max.
provided
for
each
A LED is
The light
is ON when
output.
the output is ON.
provided
for
each
A LED is
be ON
The LED will
output.
when the fuse is blown.
CommonMode Voltage:
Response Time:
Output Status Indicator:
Fuse Indicator:
OPTI CAL
COUPLER
TS-80-0027-l
Figure
V/-5.B552JJniversal DC Output Module
(True High) Simplified Schematic
VI-9
TERMINAL
TYPICAL
OUTPUT
REFERENCE
DC IN GROUP
DC RETURN
A
1
DO02
OUTPUT
2
DC IN GROUP
B
@
B
@
OUTPUT
0003
3
I#
-
g-56VDC
0
SOL. A
OUTPUT
GROUP
+
0.
0001
DC RETURN
TS-80-0028-1
GROUP
NUMBERS
1
A
a
0
SOL. 0
cc
@
+
w
-
g-56vDc
r
0
-SOL.
c
SOL. D
0004
.
Figure W-6. 8552 Universal DC Output Module
(True High) Terminal Numbering and Connections
B553
UNIVERSAL DC INPUT MODULE (TRUE HIGH)
Module
(True
Hiqh)
The MODICON B553 Universal
DC Input
(Figures VI-7 and VI-8)
conditions
four
independently
useable
to
the
DC input signals
(sharing common source
and "return")
module proThis
controller.
signals used internally
in the
voltages
varying
vides the capability
of using discrete
input
the
infrom 9 to 56 volts DC. The "True High" module requires
puts to be wired to positive
VDC since the module defines an ON
condition
(true)
as "high" voltage level.
Electrical
Input
Characteristics:
signal
requirements
for
each of the four
inputs:
" Hi g h "
(short
circuit
Input
to positive
VDC).
Input in "ON".
Control
input line "ON".
9 to 56 VDC reference
to common (one source
per
module).
'I ON I'
when greater
iS
Input
than 60% of source voltage.
Approximately
0.75
mA at
24
VDC.
1.6
mA at
48
Approximately
VDC.
to
Input "low" (short circuit
common or open circuit).
Input indicator
"OFF".
Control
input line "OFF".
ON Condition:
ON Level:
ON Current:
OFF Condition:
VI-10
Less than 40% of VDC source.
40-60% of the supplv voltage.
200 VAC steady state.
15OOV for 10 ms.
OFF to ON 7 ms. max.
ON to OFF 14 ms. max.
provided
for
each
A LED is
input.
A LED is ON when input is ON.
Inputs
Source
Inputs
Voltage
OFF
-- ON
-p-
OFF Level:
Switching Level:
CommonMode Voltage:
Response Time:
Input
Status
Indicator:
Bias Current:
9
VDC
56 VDC
Compatability
modules:
with
6 mA
22 mA
25 mA
60 mA
output
interThe B553 is capable of
connection with the BS52 Universal DC Output Module
(True
High) without
the use of
additional
components.
reversal
of
bias
Polarity
operation
with
and
supply
unclamped
inductive
parallel
circuit
loads shall not cause
failure.
Protection:
LED
u
n
,,
OPTICAL
ISOLATOR
IOK :;
20K
TS-80-0029-1
Figure
W-7. 8553 Universal
(True High) Simplified
VI-11
DC Input Module
Schematic
TYPICAL
TERMINAL
INPUT
NUMBERS
REFERENCE
-0
1
+ 111;
.
-s-SSVDC
0
0
0
DC IN
@
DC RETURN
-0
INPUT 1
1001
c9
INPUT 2
1002
0
NOT CONNECTED
NOT CONNECTED
@
a
I-o._?--M
INPUT 3
1003
INPUT 4
1004
TS-80-0030-1
Figure W-8. 8553 Universal DC Input Module
(True High) Terminal Numbering and Connections
B554
220
VAC OUTPUT MODULE
The MODICON B554 220 VAC Output
Module
(Figures
VI-9
and
controller
VI-lo)
conditions
the signals
used internally
in the
to four independent 220 VAC outputs
driving
solecapable
of
motor
starters
or
other
loads,
up
to
two
amperes
each.
noids,
The four output circuits
in the
module are
divided
into
two
Each group containing
circuits
is
fully
groups.
two output
isolated.
This module can be referred
to as an ISOLATED OUTPUT
can
Different
220
VAC sources
MODULE in a group of two points.
drive each group.
Each module
uses four
triac
devices
to
switch the loads of the user supplied VAC line.
Self contained damping networks and voltage limiting
varistor suppress line voltage
spikes and prevent
false
triggering.
Each output is provided with a fuse
to protect
circuitry
its
charfrom overload current.
The following
are the
electrical
acteristics
of the B554 output module.
Electrical
Characteristics:
Load Current:
OFF Current:
ON Current:
mA max.
amps continuous
module).
10 mA.
0.5 mA.
15 amps for 10 ms.
5 amps for 100 ms.
5 amps normal blow
per output).
5
2
Recommended Minimum Load:
ON Holding Current:
Inrush Load Current:
Fuse Rating:
Load Voltage:
VI-12
(8
amps
(one
per
fuse
Working
160 to 260 VAC.
40 to 70 Hz.
300 VAC max. for
400 VAC max. for
Voltage:
Transient
ON Voltage
Voltage:
Drop:
CommonMode Voltage:
Response Time:
Output
Status
Indicator:
Fuse Indicator:
Compatibility
modules:
with
input
10 sets.
1 cycle.
1 volt
at
2
Approximately
amps currrent.
volts
Working 400 VAC, 1500
max for 10 ms.
ON to OFF 0.3 to 8.3 ms. max.
(at 60 Hz).
OFF to ON 0.3 to 10 ms. max.
for
provided
A neon lamp is
will
The lamp
each output.
be ON when the output is ON.
for
provided
A neon lamp is
will
lamp
The
each output.
be ON when the fuse is blown.
interThe B554 is capable of
MODICON
the
with
connection
B555 and H235 220 VAC Input
use of
the
without
Modules
additional
components.
AC HOT
CIRCUIT
TURN
5A
TS-80-0031-1
Figure
W-9. B554220 VAC Output Module
Simplified Schema tic
VI-13
OUTPUT
TYPICAL
TERMINAL
OUTPUT
NUMBERS
REFERENCE
HOTGROUP
LAMP COMMON
A
@
GROUP A
0001
OUTPUT
1
@
0002
OUTPUT 2
@
HOT GROUP B
@
GROUP B
@
0003
OUTPUT 3
0
0004
OUTPUT 4
LAMP COMMON
n
22OVAC
\;=/
0
@
<I
I
n
u
ZZOVAC
0
-
-
TS-80-0032-1
Figure VI-lo. B554 220 VAC Output Module
Terminal Numbering and Connections
B555
220
VAC INPUT MODULE
Module
(Figure
VI-11
and
The MODICON B555 220 VAC Input
draws
Each
input
VI-12)
contains
four 220 VAC isolated
inputs.
contamicurrent
to inhibit
the buildup of
sufficient
"wetting"
pushbutton,
used
in
contacts
silver
nants on the surface of
signal
reThe input
pressure switches,
etc.
limit
switches,
quirements for each of the four inputs are as follows:
Electrical
Characteristics:
Input at high level.
indicator
ON
Input
(neon
lamp).
Controller
input ON.
in
1.40 to
260 VAC, source
with
impedance
less
series
than 1K ohm. 40 to 70-Hz.
low level
or open
Input at
circuits.
Input indicator
OFF.
Controller
input OFF.
than
less
90
Input
voltage
VAC or less than 150 VAC with
than
source impedance greater
80K ohms.
Approximately
120 VAC.
ohms
at
32K
Approximately
working frequency.
(6OHz)
state
400 VAC steady
1500 volts for 10 ms.
OFF to ON 10 ms. max.
ON to OFF 20 ms. max.
ON Conditions:
ON
Level:
OFF Condition:
OFF Level:
Switching Level:
Input Impedance:
CommonMode Voltage:
Response Time:
VI-14
Compatibility
modules:
with
output
The R555 is capable of
interconnection
with
the
MODICON
5554 and R334 220 VAC Output
without
the
use of
Modules
additional
components.
Q
66K
10K
OPTICAL
COUPLER
==I=+0
-0
V
TS-80-0033-l
II
Q CHARACTERISTIC
Figure V/-11. 8555 220 VAC Input Module
Simplified Schema tic
TERMINAL
TYPICAL
NUMBERS
INPUT
~~1~
]
INPUT 3
1003
cy/j
]
INPUT4
1004
TS-80-0034-1
Figure W-12. B555 220 VAC Input Module
Terminal Numbering and Connections
VI-15
B556 VDC TTL OUTPUT MODULE
Module
(Figure
VI-13
and
The MODICON B556 VDC TTL Output
VI-14)
conditions
the signals
used internally
in the
controller
to four independent outputs capable of driving
up to
75 mA of
The module uses four
transistor
drives
to
TTL or DTL loads.
control
logic loads associated
with an externally
applied 5 VDC
source.
Electrical
Logic
Characteristics:
Line output ON.
Output transistor
OFF.
Output indicator
ON.
Output voltage:
4.OV minimum
and + 5V
at
1 mA current
supply at 4.75 VDC.
One State:
TO OPTICAL
CIRCUITS
COUPLER
TS-80-0035-1
Figure
W-13.6556 VDC
TTL Output Module
Schema tic
Simplified
TYPICAL
TERMINAL
INPUT
NUMBERS
REFERENCE
SVDC IN
SVDCRETURN
0001
OUTPUT 1
0002
OUTPUT 2
NOT CONNECTED
NOT CONNECTED
0003
OUTPUT 3
0004
OUTPUT 4
TS-80-0038-1
Figure W-14. 8556 VDC TTL Output Module
Terminal Numbering and Connections
~1-16
Logic
Zero State:
+ 5V Supply
by User):
Line output OFF.
Output transistor
ON.
Output indicator
OFF.
Output voltage
0.4V
max.
at
Rated
current:
75 mA.
75mA
continuous,
100 mA peak
(10
ms., 20% duty cycle).
(Supplied
Voltage:
5.0+ 0.25 V'DC.
Current:
325mA
max. current
(all outputs ON).
200 VAC steady state max.
(SO/60 Hz).
1500 VDC for 10 ms.
OFF to ON 4 ms. max.
ON to OFF 13 ms. max.
A LED is
provided
for
each
output.
The light
is ON when
the Output
is
in
logic
one
state.
CommonMode Voltage:
Response Time:
Output
Status
Compatibility
modules:
Indicator:
with
input
interThe B556 is capable of
connection
with
the
MODICON
B557 and B237 Input
Modules
without
the use of
additional
components.
B557 VDC TTL INPUT MODULE
(Figures
Module
VI-15
and
THe MODICON B557 VDC TTL Input
signals
VI-16)
conditions
up to four independent +5 VDC input
to the signals
used internally
by the controller.
Electrical
Input
signal
Characteristics:
requirements
for
Logic One State:
Conditions:
each of the four
inputs:
Input "High" or open circuit.
Input indicator
ON.
Controller
input ON.
VIH = 2.OV minimum.
5.5V:
II = 0.1 mA max. at VIH
V source = 5.OV.
voltage
+ 8.0
Maximum input
volts.
Maximum positive
clamp current:
25 mA.
Level:
VI-17
Logic Zero State:
Conditions:
Input "low".
Input indicator
OFF.
Controller
input OFF.
VIL = 0.8V max.
IIL = 1.1 mA max at
V source
= 5.25V and VIL = OV.
input
Max negative
voltage:
-2 volts.
Max negative
clamp: 15 mA.
200 VAC steady
state
max
1500 for 10 ms.
(50/60 Hz).
Level:
CommonMode Voltage:
+ 5V Supply
by User):
(Supplied
5.0 + 0.25 VDC.
Voltage:
65 rnx max.
Current:
OFF to ON 4 ms. max.
ON to OFF 13 ms. max.
provided
for
each
A LED is
The light
is
ON when
input.
input is logic one state.
Response Time:
Input
Status
Compatibility
modules:
Indicator:
with
output
The B557 is capable of
interconnection
with
the
MODICON
Modules
B556 and B236 Output
without the use of
additional
components.
2K
TO
OPTICAL
COUPLER
TO OTHER
CIRCUITS
Figure
VI-15.8557 VDC-TTL
Simplified
Input Module
Schema tic
VI-18
TYPICAL
INPUT
TERMINAL
REFERENCE
NUMBERS
0
2
0
3
0
4
0
5
0
6
0
08
7
5VDC
IN
jVDC
RETURN
NPUT
1
1001
NPUT
2
1002
JOT CONNECTED
NOT CONVECTED
INPUT
3
1003
INPUT
4
1004
TS-80-0038-1
Figure W-16. 8557 VDC TTL Input Module
Terminal Numbering and Connections
B558
UNIVERSAL
DC OUTPUT MODULE
(TRUE
LOW)
Module
(True
Low)
DC Output
The MODICON B558 Universal
(Figures VI-17 and VI-18)
converts the signals
used internally
capable
of
independent
DC outputs
in the controller
to four
solenoids
or
any
driving
relays,
pilot
lamps, motor starters,
uses transistors
The module
two amps.
load
up to
other
The
switches to control
loads connected to the user DC source.
two cirof
four output circuits
are divided
into two groups
module
and the
The two groups are fully
isolated
cuits each.
groups
of
MODULE
in
can be referred
to as an ISOLATED OUTPUT
two points.
connection
load
user
The "True Low" output module requires
directly
The
negative
WC
is
wired
to the positive
VDC source.
the
modto the module, since the "return"
line is switched by
circuits
inelectronic
Note
that
for
bias
of
the
ule logic.
the
the
positive
VDC
is
also
wired
directly
to
side the module,
module.
transient
suppress
clamp diodes
Self contained
Each
output
circuit
when inductive
loads are driven.
VI-19
voltages
fused
is
to prevent its circuitry
in
the
case of
overload
currents.
LED's are provided for each circuit
to
indicate
blown
fuses.
Separate sets of LED's are provided to
indicate
ON status
of
each output.
Electrical
Characteristics:
Load Current:
OFF Current:
Steady State
-5 mA max.
2 amperes max (8 amps per
module).
10 mA.
7 amps max for 10 ms.
5 amps max for 100 ms.
5 amps, normal blow per
each
output.
5 amps, normal blow per
each
output,.
ON Current:
Recommended Minimum Load:
Inrush Current:
Fuse Rating:
Load voltage:
Working Voltage:
Peak Voltage:
Output Voltage
Bias Current:
9 to 56 VDC (different
source
can be used for each group
of
two outputs in one module).
60 VDC max.
1.5V max at 2 amps current.
Each source (two required
per
module)
should
provide
the
following
current:
Drop:
Source
Voltage
--_
24 VDC
56 VDC
outputs
- OFF
6 mA
13 mA
outputs
ON
26 mA
32 mA
NOTE
If one source provides power to both pairs
of
on a module, the above values should be doubled
tain current
load for that module.
CommonMode Voltage:
200 VAC steady state.
1500 Volts for 10 ms.
OFF to ON - 1 ms. max.
ON to OFF - 1 ms. max.
A LED is
provided
for
each
output.
The light
is ON when
the output is ON.
A LED is
provided
for
each
output.
The LED will
be ON
when the fuse is blown.
Response Time:
Output
Status
outputs
to
ob-
Indicator:
Fuse Indicator:
VI-20
Compatibility
modules:
with
input
The B558 is capable of
interconnection
the
MODICON
with
B559 and B233 DC Input
Modules without the use of
additional
components.
V
Figure
W-17. B558 Universal
(True Low) Simplified
TS-80-0039-1
DC Output Module
Schema tic
TYPICAL
OUTPUT
TERMINAL
REFERENCE
NUMBERS
DC IN GROUP
DC RETURN
A
@
GROUP
A @
0001
OUTPUT
1 @
0002
OUTPUT
2
DC IN GROUP
-;,,:9-WDC,,
S0L.A
SOL.0
@
B @
.
GROUP
0
@
r
0003
OUTPUT
3
@
.
0004
OUTPUT
4 @
h
DC RETURN
-, , ,;9-WDC,,
q/SOL.
c
SOL. D
TS-80-0040-1
Figure W-18. 8558 Universal DC Output Module
(True Low) Terminal Numbering and Connections
B559 UNIVERSAL DC INPUT MODULE (TRUE LOW)
Module
(True
Low)
The MODICON B559 Universal
DC Input
four independently
useable
(Figures VI-19 and VI-20)
conditions
to
the
signals
DC input signals
(sharing
common and "returnl')
VI-21
used internally
in the controller.
capability
of using discrete
input
56 VDC.
the
module provides
This
from 9 to
voltages
varying
The "True Low" module requires
to
the inputs
to
be wired
" low"
logic
defines
the negative
line of the source since the
voltage level
on an ON condition
(true).
Electrical
Input
Characteristics:
signal
requirements
for
ON Level:
ON Current:
OFF Condition:
OFF Level:
Switching Level:
CommonMode Voltage:
Response Time:
Status
Indicator:
Bias Current:
9 VDC
56 VDC
Compatibility
modules:
with
inputs:
to
Input "Low" (short circuit
negative WC).
Input indicator
ON.
Control
input line ON.
Source 9 to 56 VDC.
Input ON when less
than
40%
of supply voltage.
Approximately
1.2
mA at
24
zero
VDC source and input
at
volt.
Input "High" or open circuit.
Input indicator
OFF.
Control
input line OFF.
Input
greater
than
60%
of
supply voltage.
40 - 60% of supply voltage.
200 VAC steady state.
lSOOT7for 10 ms.
OFF to ON 7 ms. max.
ON to OFF 14 ms. max.
provided
for
each
A LED is
input.
The LED is
ON when
input is ON.
Source
Inputs
Inputs
Voltage
----- OFF
-- ON
ON Condition:
Input
each of the four
8mA
30 mA
25 mA
60 mA
output
THe B559 is capable of
interconnection with the
BS58 and
withB232 DC Output
Modules
out
use of
the
additional
components.
Polarity
reversal
of
bias
and
operation
with
supply
parallel
unclamped
inductive
circuit
loads shall not cause
failure.
Protection:
VI-22
TS-80-0041-1
Figure
Vi-19. B559 Universal DC input Module
(True Low) SimplifiedSchema
tic
TYPICAL
-,,,1+9+6VDC,
TERMINAL
INPUT
NUMBERS
REFERENCE
@)
DCIN
@
DC RETURN
1001
1002
@
NOT CONNECTED
@
NOT CONNECTED
,O7
INPUT3
1003
@
INPUT4
1004
Figure W-20. B559 Universal DC Input Modules
(True Low) Terminal Numbering and Connections
B577 ANALOG INPUT MODULE
three
The MODICON B577 Analog Input Module is available
in
analog
signals.
four
each capable of servicing
up to
options,
model
l-5
VDC signals,
handle
Model B577-005 is designed to
-10
to
handles
B577-010 handles O-10 VDC, and model B577-015
selection).
established
Any analog
+lO VDC signals
(factory
groups
of
four
four
input module can be addressed to one of
setting
This selection
is made by
input registers.
consecutive
one of four switches on the rear of the module as follows:
VI-23
Switch (Group A)
SlA -S2A
S3A
S4A
Input Registers
-3001-3004
3009-3012
3017-3020
3025-3028
A second set of four switches allows specific
input
registers to be "Locked out" or not serviced
by this module.
Registers not serviced
can be used by other properly
addressed
modules; if another module is not servicing
them,
these
registers
will
contain zero at the CPU. The exact
register
effected
by
each of these four switches is also
controlled
bv the
module
address as follows:
Switch (Group B)
ZZB
S2B
S3B
S4B
Electrical
Input
SlA
ml
3002
3003
3004
S2A
YKQ9
3010
3011
3012
S3A
3017
3018
3019
3020
S4A
3625
3026
3.027
3028
Characteristics:
Voltage:
Maximum Input Voltage:
CommonMode Rejection:
Cross Talk (between inputs):
Input Impedence:
Frequency Response:
Setting
Time (within
0.01%
of final
value):
Resolution:
Linearity
Error:
Accuracy:
Temperature Coefficient:
Offset
and Linearity:
Gain:
External
Power Requirements:
Isolation:
Input to input:
Input to Controller:
Input to External
Supply:
l-5 VDC (Model 005).
O-10 VDC (Model 010).
-10 to + 10 VDC (Model 015).
220 VAC.
-70 dB.
-70 dB.
2 Mohms.
DC to 100 Hz (-2 dB points).
10 msec.
1 bit in
Less than
0.05% of
0.25% of
1024.
0.05% of full
scale.
full
scale at 25'C.
full
scale at 0-6SYC.
0.005% per?
of full
scale.
0.005% per'C of input voltage.
15-30 VDC at 250 ma.
1 mohm.
300 VAC continuous.
1500 V for 100 msec.
Power
500 VDC.
Each analog input will
be converted and new data
presented
to the controller
each scan.
The numerical
value
supplied
to
the controller
will
vary linearily
from 000 to 999 as the
analog input signal varies
from minimum to maximum. The following
illustrates
typical
numerical
values:
VI-24
Voltage
- 10 V%
- 5 VDC
0 VDC
1VDC
2.5 VDC
5 VDC
10 VDC
.
010
000
000
000
100
250
500
999
- 005
-000
000
000
000
500
999
999
-
- 015
000
250
500
550
625
750
999
indiEach B577 Analog Input Module incorporates
an Active
the
CPU
communiThe Active LED will
be ON as long as
cator.
The external
cates to the module at least once each 100 msec.
is
protected
by a single
l/2
amp Pica
fuse
power supply
Little
Fuse
number
276.500
or
(MODICON Part
No;
57-0024.
Wiring
to
the
B577
module
is
made
via
a
30-pin
conequal).
Buchanan
Part
NO.
52-2109.
(MODICON Part
No.
nector
This
connector
can
PCB2B30A616798) supplied with the module.
the
module without
disturbing
be removed for replacement
of
the
module,
a service
field
wiring;
to facilitate
removal of
Connections
(Figure
should
be
left.
field
wiring
loop of
VI-21)
to this connector are as follows:
Circuit
1
2
3
4
(external
Power
15-3OVDC)
7
10
- Input
2
5
8
11
29
30
+ Input
4'
Shield
3
6
9
12
TS-80-0043-1
Figure
V/-21.8577 Analog Input Module
Typical Connections
m-25
6.2
REGISTER
l/O DESCRIPTIONS
The following
supplied later:
B579-001
B581-001
B583-001
B585-001
B586-001
B587-001
500 Series
Register
I/O
descriptions
will
be
Hi Speed Counter Module
Absolute Encoder Input Single-Ended
Module
Prox
Safe
SW Input
Latched
Int
Module
Incremantal
Encoder Input Module
Ramping Prog. Stepper Drive Module
Latched Prox SW Input Module
VI-26
SECTION
VII
J470 ADAPTER
7.0
INTRODUCTION
which
option
The 5470 Adapter (Figure VII-l)
is a customer
The adapter
is
may be added to any 484 Controller
at any time.
The three-foot
mainframe.
mounted adjacent
to the controller
This
connector
connector.
cable plugs into the communication
device.
Therefore,
is usually
used to talk to
a programming
(comthe
EIA device
the J470 has two connectors:
one is for
Simultaneous
for
a programming
panel.
puter)
and the other
FIA
when
the
However,
operation
with both units is possible.
stops
device is actively
communicating,
the
programming
panel
protime,
the
During this
lockout
for about a half second.
stores
St also
gramming panel displays
a COMMBUSY message.
Power
requests made until
the communication port is available.
conitself
The controller
flow and screen displays
freeze.
tinues to operate during lockout time.
TS-80 -003 4-2
Figure
VII- 1. J4 70 Adapter
VII-1
The user selects
the EIA communication
and quantity
of stop bits needed.
parity,
are shown in Table VII-l.
speed
Avaible
(baud rate),
baud rates
Table VII-l. Setting of J470 Adapter Option Swps
BAUD RATE
s-1.
9600
I
4800
2400
1200
300
200
150
110
0
1..
s2
1
s3
1
0
0
1
0
STOP BITS - S4 (0 = two stop bits,
1 = one stop bit)
PARITY - S5, S6 as follows:
S5 Activates
parity
(0 = Inhibit,
1. = Enable)
S6 Selects parity
(0 = Odd, 1 = Even)
NOTE
When shipped from factory,
for:
9600 baud, no parity,
ports active.
will
be set
J470 Adapter
one stop
bit,
and both
TS-80-0035-2
Figure V/l-2. Option Selector on J470 Adapter
VII-2
Shown in Figure VII-2
is a select
switch that
to indicate
device or devices are being used with
must be used
the ;rR7O.
stop
bits
is
parity,
or
Any combination
of
baud rate,
always
communicates
at
The P180 Programming
Panel
allowed.
with one stop bit.
9600 baud, even parity
Communications
to
a
computer can be at any option selected
by the user.
required
to
also
operate
with
L206
The 5470 Adapter is
mhua, the
Universal
Tape Loader and T.158 Telephone interface.
connected
via
the
484 Controller
can be simultaneously
IT470
Adapter to the P180 Programming Panel and one of the followi_ng:
Universal
Tape Loader (Model L206)
Telephone Interface
(Model T158)
EIA Compatible Computer
484
MAINFRAME
<
>
J470
.
ADAPTER
3
EIA
,
I(
,
DEVICE
L
6-L
T
(SEE TABLE)
200 FT
MAX
k,
PI80
/
Maximum
Distance (L)
Device
Maximum
Baud Rate
L206
50’
T158
100’
300
50’
9600
Computer W/O Adapters
9600
Computer W/1642
Adapter
2000’
300
Computer W/1643
Adapter
1000’
9600
Figure
TS-80-0044-1
W-3. J470 Block Diagram, External Connections
various
connections
Figure VII-3
is a block diagram of the
limitations.
Most comdistance
to the J470 Adapter and the
puters are compatable of communicating at distances
up to
fifty
feet (per EIA specification
RS-23X);
however, the J470 Adapter
(baud rates
up
is capable of driving
up to 1000 feet of cable
to 9600) or 2000 feet with baud rates equal to or less than 300.
VII-3
/VII-4
SECTION
VIII
5471 l/O EXPANDER
8.0
INTRODUCTION
The J471 I/O Expander
enables
484 Programmable
the
Conpoints
troller
to access an additional
256 discrete
I/O
beyond
Al 1. reqister
devices
the basic 2S6 discrete
I/O points.
may
MODTCOPJ
model
also be used on the extended
I/O bus.
484
Any
executive
with
Programmable Controller
equipped
anv enhanced
software package may make use of the ;1471.
8.1
CONNECTIONS
AND MOUNTING
The J471 I/O Expander is desiqned to be mounted on any flat
The J471
will
vertical
surface by the use of 4 EA 5/1.5”
bolts.
attach to the remote end of any standard Now nus duct,
as well
shielded
Now Bus
as the W514 flat
cable and the W513 flexible
the
extension
cable.
The Expanded Now Bus is then attached
to
Access to the Now Bus conopposite
side of the J471 chassis.
nectors on the J471 PC board is gained by loosening
the two adjustible
grip latches
on the front cover and pulling
the top
of
cover
iS
hinged
the front cover out and then down. The front
serves
to
house the
power supply
bottom
and also
at the
The expanded I/O
is
alassembly (Figures VIII-l
and VIII-2).
connector
on the
inside
of
the
ways connected to the right
the
left
connector
comes into
Data from the 484 always
5471.
on the J471.
8.2
DIMENSIONS
The 5471 is approximately
18" H x 11" W x 6.75"
( 460.8 CM x 281.6 CM X 172.8 CM) and weighs 30 lbs
grams) (Figures VIII-3
and VIII-4).
8.3
ELECTRICAL
D
(13.6
kilo-
CHARACTERISTICS
The 5471 uses 250 ma at 12 VDC from the power supply of .the
The + 5VDC I/O power from
the
484 Controller
484 Controller.
is not used by the J471 to power any circuitry.
The J471 has an internal
power supply that provides +12 VDC
at 3.6 amps and + SVDC at 4.5 amps (+5 I/O) to the Expanded Now
Bus to power I/O devices.
The power supply
within
the
J471
contains
undervoltage
monitor circuitry
that will
shut
off
the
+5 VI/O power to the Expanded Bus if the internal
voltages
fall
to less the 90% of their
nominal value,
or
if
the
+5 T? I/O
power from the 484 Controller
is not present on the Now Bus.
VIII-1
The J471 is
power sources:
available
Voltage A.
B.
c.
compatability
with
Frequency
--i
117 VAC + 10%
110 VAC + 10%
220 VAC -r 10%
60 HZ + 2.5 Hz
50 HZ -i 2.5 Hz
50 HZ -+ 2.5 Hz
The 5471-500 is set at the factory
internal
jumper change will
convert it
input protection
is provided by a l-1/2
0.4
the
to
following
Current
--
Part
No.
1 amp
1 amp
0.6 amp
J471~-600
,J471-500
5471-500
for 110 VAC 60 Hz.
An
to 220 VAC 50 Hz.
Power
slow-blow fuse.
INDICATORS
On the fr,ont of the 5471 are
and defined as follows:
three
indicator
lights
labled
POWER:
indicates
that the J471
power
When on, this light
and +5v
supply voltages
are within
10% of normal
I/O from the 484 is present on the Now Bus.
ACTIVE:
that
indicates
When on,, this light
producing discrete
read strobes
on
bus as commanded by the 484.
BUSY:
When on, this light
indicates
that the BUSY line
state
true
on the Now Bus is being pulled to the
(low level)
by the J471.
This will
happen if
any
busy or
device connected to the Extended Bus is
than
if the J471's power supply voltages
are less
90% of their
nominal level.
8.5
the
the
J471
is
extended
ADDRESSING
I/O
bus,
Discrete
I/O modules when used on the
expanded
1.129
to
modules
and
occupy addresses 0129 to 0256 f.or output
When. register
modules are used on the
1256 for input modules.
would
expanded I/O bus, the addressing remains the same as it
Table
be if the register
modules were on the normal
I/O
bus.
VIII-l
shows these listings.
VIII-2
J-
LUP
BUS DUCT
BUS DUCT
(INI
TO 10 I/O HOUSINGS
(OUT)
\
TS-80-0045-l
UP TO 10 I/O HOUSINGS
Figure VIII-l. J471 Block Diagram
,--
BUS
DUCT
i
(IN)
T-i
t
I
I
I
I
I
I
LJ
I
I
I
I
I
I
I
LJ
I
NOTE
J471 may be mounted to either side of the C484. It may be attached
cables: W513, W514, or W515.
Figure VIII-2. J471 Mounting
VIII-4
by any one of the following
*-_---L
-_--__
+ _--__ :=I
+ -_----__+
--____
t + -----e-----
-2-l
t
I
I
i
t
I
+
1
+
p
+
-----7
+
_I
---__
?1
__-__+
+ -------+
I
d
T7
I
__-..
__-__
f-;---+
-Lt
I
+
t
+
__t
-----~--~--
+
+ __-__t==
+
+
+
t
-_-_~~~
I
-I+
f
+
L ==-==
+j ==-==
+j
I
I
II
I’
I’
1
.
!I.
L
VIII-5
F
APPENDIX A
EXTERNAL CABLES
A-l
Description
----
Cables
--WSlO-oxx
right
left
or
Bus cable for
mounting
I/O
from CPU or Expander.
(XX = 2, 3, 4,
6,
8,
10 slots)
W511-002
Bus cable
mainframe
W512-003
to
Bus cable
for
mounting
I/C
mainframe in underduct
(3 slots).
with 5566-003.
w13-010
for 5471
I/O extension
cable (shielded)
for mounting
10 ft
from CPU/ExI/O or Expander up to
pander or bus cable attachment
point.
Only
and one length
from mainframe
one length
from Expander
in
(Available
in
system.
lo-ft
lengths only.)
AS-2183-0Xx
T158-611,
Cable included with T!152-611, 002,
002.
Required for
Tl54-611,
002 484 compatibility.
Standard length is 12 ft.
Also
available
in 25, 50, and 75-foot
lenghts.
AS-W180-XXX
AS-W181-XXX
AS-W182-XXX
Supplied with P18O=OYZ in standard 8-foot
Used to attach P180 to C484-XYZ or
length.
specified
J470-X00.
Also
available
*
attachment
dire;:
for
length up to 50 feet
to C484-XYZ.
may be
Lengths up to 200 feet
specified
for attachment
to J470-X00.
AS-W474-001
J474 Attachment
mounting
for
(2 slots).
A-2
cable
I/C
supplied
to
with
bottom
of
bottom
of
Supplied
J474.
GLOSSARY OF TERMS
G-l
ADDRESS SELECTOR
A switch on the top of each I/O
Housing
to
establish
housing
address.
Each
switch contains
four sections,
one can
address
at
be selected
to
establish
housing 1 to 4.
ARITHMETIC
A type of logic used to
add,
subtract,
two
numerical
divide
multiply
or
detect
addivalues.
Optional
outputs
(greater
comparisons
tion
overflow,
and ilthan, equal to, or less than),
legal division.
BCD (Binary-Coded
Decimal)
A system of numbers representing
decimal
binary
(ON/OFF)
digits
(O-9) with four
industrial
lines.
BCD is a recognized
thumbwheels)
standard;
BCD input (e.g.,
and output
displays)
numerical
(e.g.,
are readily
available.
BINARY
values
A numerical
system wherein
are
represented
only
by numbers 1 and 0
commonly
This
system
is
(ON/OFF).
hardware
employed in modern electronic
since circuits
can be economically
designed for ON/OFF status.
BIT
can be
A single
number whose value
Commonly reeither
a One or a Zero.
presented
in hardware by a small
magnetic toroid device that can be either
magnetized or not magnetized.
CHANNEL
A portion
of the
of the controller.
sents 50% of the
CHECKSUM
An error detection
code that
sums all
one bits of a group of data storage
locations.
Summing is done without
carries from one column to
another.
The
known result
is
stored;
any variance
indicates
data
has
from
this
result
been altered.
Checksums can be prepared for any portion
of
logic
memory,
coil storage,
or register
content.
G-2
I/O
capability
total
Each channel
repretotal
available
I/O.
CMOS
Advanced semi-conductor
memory that
requires DC power to retain
its
content.
However, the amount of DC power is
very
low when compared to other memory techniques,
allowing
relatively
small
batto maintain
this
memory
for
teries
years without application
of AC power.
CORE MEMORY
store
An electronic
component used to
utilizafor
future
data magnetically
tion that is retentive
upon power failure.
COUNTER
used
A type of logic that is
late the operation
of external
CPU (Central
Processor Unit)
See PROCESSOR.
DISABLE
to
disconnect
a logic
The capability
its
norcoil or a discrete
input from
and force it ON or OFF.
mal control,
DISCRETE
can be either
References that
OFF; can be input, output,
or
references.
DOUBLE PRECISION
nuThe technique of storing
a single
regismerical
value in two consecutive
Since each register
can store
up
ters.
999),
(maximum value
digits
to three
magnitudes
of
allows
double-precision
up to 999,999 to be stored.
DUMP
Recording the entire
memory of
a ConService
the
onto
disk
by
troller
Generally
accomplished
by use
Center.
Conthe
Interface
at
of a Telephone
troller.
ELEMENT
the
484
The basic
building
block
of
conrelay
An
element
can
be
a
logic.
fixed
tact,
horizontal
shunt
or open,
register
reference,
or
numerical
value,
coil representation.
FORCE
The pushbutton on the
P180 Programming
change the
Panel that can be used to
state of a Disable
reference.
The reference will
be changed OFF to ON or ON
time
this
pushbutton
is
to OFF every
depressed.
G-3
simuto
counters.
ON or
internal
HEXADECIMAL
that
represents
system
The numbering
with
all possible
statuses of four bits
sixteen
unique digits
(O-9 then A-F).
INPUT
information
to
A signal that
provides
discrete
can be either
the controller;
contacts,
relay
input
(pushbutton,
limit
switches,
etc.)
or
numerical
input
(thumbwheel,
external
solid-state
device,
etc.).
I/O
the Controller
Input/Output,
includes
to the "real world";
crete and register
signals.
LATCH
The type of coil that is retentive
upon
to
power failure.
Can be used similar
coils
are
a latching
relay.
Normally
reset to OFF conditions
upon power up;
user
as
those coils
selected
by the
not
be altered
and
latched
(L)
will
condition
previous
retain
their
thus
(ON/OFF).
MAINFRAME
See PROCESSOR.
MEMORYPROTECT
The hardware
to prevent
a
capability
portion
of the
memory from being
aldevice.
This
tered
by an external
keylock
conhardware feature
is under
trol.
MODULE
can
be
Hardware
sub-assembly
that
replaced
for
easily
maintenance
purIf a failure
occurs, the
module
poses.
conis rapidly
replaced to restore
the
The
trol
system with minimum downtime.
failed
module (Processor,
Power SUPPlY,
then
repaired
at
a
or I/O module) is
later
time.
NETWORK
elements
A group
of
connected
logic
A
used to perform a specific
function.
network can be from one element
to
a
elements
complete
10 x 7 matrix
of
(plus coils)
as desired by the user.
NODE
can rePoint on a ladder diagram that
ceive power from left
or provided
power
This can be an input
to
flow to right.
a logic element (left
side) or
an output from a logic element (right
side).
G-4
connection
both
dis-
OUTPUT
the
Controller
from
A signal provided
either
dis"real
world"
can
be
to the
output
(solenoid
valve,
relay,
crete
indicator
etc.),
motor starter,
lamp,
display
of
or numerical output
(e.q.,
values stored within
the Controller).
PRESET
or
The limit
established
for a counter
count
or
The current
timer function.
register
refrom
the
time available
element
lower
cannot
ferred
to in the
limit.
At
the
this
preset
exceed
the logic output is energized.
value,
PROCESSOR
the
Controller
system,
of
The "brain"
wherein the customer's
logic and execusolvinq
logic
and
tive is stored;
all
the
is
performed
bv
decision
making
CPU
or
Also
called
the
Processor.
mainframe.
RAM(RandomAccess Memory)
A memory where individual
bits are
groups
stored and accessed, in lieu
of
of bits as used for numerical storage.
REAL TIME
durinq
The actual time
events take place.
which
physical
REAL WORLD
The actual world within
events take place.
which
physical
REFERENCE
the
connumbers used in
Four-digit
struction
of the customer's
logic.
Rediscrete
(logic
ferences can be either
steps)
or
inputs,
or
sequencer
coils,
register
(input or holding).
REGISTER
Controller
alloA location
within
the
numerical
the
storage
of
cated
to
values (up to 999).
All holding
regison power failure.
retentive
ters are
registers:
three
types
of
There
are
controlled
by
input whose contents are
world"
outside
the
Con"real
the
whose conregisters
troller;
holding
from within
the
controlled
tents are
which
and output registers,
Controller;
registers
since
holding
special
are
their
contents can also be provided
to
the "real world".
G-5
RELAY ELEMENT
simulate
the
A logic
symbol used to
Contacts can be noreffect
of relays.
mally open, normally closed,
or
transitional
contacts.
REMOTE PRESET
The capability
for
the
preset
placing
for a timer
or counter
line
into
a
register
and referring
to that
register
in the upper element of the logic.
The
preset
is
no longer
fixed
since
the
contents of the register
(and thus
the
preset)
can be altered
at any time.
RS-232C
America
Electronic
Institute
of
(EIA)
standard
for
data
communications,
Data
RC-232 type
C.
is
provided
at
various
rates,
eight
data
bits
per
character.
RUN LIGHT
A LED indicator
on
indicates,
when lit,
being processed.
SCAN
The technique of
examining
or
solving
logic netowrks one at a time
in
their
numerical
order.
After
the
last
network is solved,
the
next
scan begains
at network one; loqic is
always
solved
in the fixed cyclic
process.
SOLID-STATE
Circuitry
designed
using
only
integrated
circuits,
transistor,
diodes,
etc.;
no electromechanical
devices
such
as relays
are
utilized.
High
reliability
is
obtained
with
solid-state
logic,
which would be de.graded by depending upon electromechanical
devices.
TIMER
A logic element used to measure and record the time of an event
or
sequence
of events.
Timers can accumulate
time
in seconds, tenths of seconds,
or hundredths of seconds.
TRAPPED
(START/STOP)
the
Processor
that
that the
logic
is
The ability
to stop
a controller
from
scanning; can be exercised
only
from
a
computer or the P180 Programmer.
The
controller
can still
communicate to
the
computer but will
have all outputs OFF.
G-6
MODlCON
an AEG company
Document
ML-C484-MTN
Part Number
Rev. B
484 Programmable Controller Maint. Manual
Title
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