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Automation and Drives - SCE
Output Parameters:
Parameter
Data
Type
Value Range
Default
Description
LMN
REAL
0.0
LMN_PER
WORD
W#16#0000
QLMN_HL
M
BOOL
FALSE
QLMN_LL
M
BOOL
FALSE
LMN_P
REAL
0.0
PROPORTIONALITY COMPONENT. The output "Pcomponent" contains the proportional component of the
manipulated variable.
LMN_I
REAL
0.0
INTEGRAL COMPONENT. The output "I-component“
contains the integral component of the manipulated variable.
LMN_D
REAL
0.0
DERIVATIVE COMPONENT. The output "D-component"
contains the derivative component of the manipulated
variable.
PV
REAL
0.0
PROCESS VARIABLE / actual value. At the output "Actual
value", the effectively active actual value is read out.
ER
REAL
0.0
ERROR SIGNAL / System deviation. At the output "System
deviation", the effectively active system deviation is read out.
Preface
Fundamentals
T I A Training Document
Issued: 02/2008
MANIPULATED VALUE. At the output "Manipulated value",
the effectively active manipulated value is read out in the
floating point format.
MANIPULATED VALUE PERIPHERY. The manipulated value
in the periphery format is wired to the controller at the output
of "Manipulated value periphery“.
HIGH LIMIT OF MANIPULATED VALUE REACHED. The
manipulated value is always limited to a high and low limit.
The output "High limit of manipulated value reached" signals
that the high limit has been exceeded.
LOW LIMIT OF MANIPULATED VALUE REACHED. The
manipulated value is always limited to a high and low limit.
The output "Low limit of manipulated value reached" signals
that the low limit is underrange.
Discontinuous Action Controller
Controller Block (S)FB41
Setting the System
Appendix
Page 64 of 64
Module
B3
Control Engineering with STEP 7