Download User Manual revision ports etc

EADmotors
D-404 Rev. 1.0
ASI-10 RS-422 (Party Line) Hardware
EAD “Party Line” communication is an RS-422 design that uses RS-485 rated circuits. This interconnect is
comparable to a LAN configuration. The hybrid design merges the best of both EIA specifications and
maintains compatibility with EIA RS-422 and features:
· Multi drop serial bus
· Full duplex connection.
· Zero to five volt differential
· Data speeds from 100K to10M Baud
· Up to 32 controllers from one COM port
· Cable network length to 1200 Meters (4000 ft)
Party Line Connect
AXIS A
AXIS B
AXIS “n”
COMPUTER
SERIAL ADAPTER
TERMINATOR
RS-422 “Party Line”
Party line hardware requires three components:
1. A serial adapter (RS-232 to RS-422),
2. A cable(s) and
3. A terminator (supplied with adapter).
Cable Specifications
The recommended interconnect cable for party line use is UTP 24 AWG Twisted-Pair (category 5) network
cables. The older style telephone cable is suitable for RS-232 or lab work. These cables can be purchased
optionally with the D-404 (P/Ns C-CAT503, C-CAT506).
Device (Axis) Connection
Each motor controller has two RJ-45 connectors for party line. The +5V line is isolated to prevent “back”
feeding power supply voltage to any individual axis with the wall power to the power supply switched off or
power removed. Thus, it is important that interconnecting cables travel from the output connector (on right)
of one axis to the input connector of the next axis (on left)6.
Two terminating resistors are used on the last differential line receiver. The serial adapter contains one
resistor and a terminator plug is to be used on the output connector on the last axis in the Party Line bus.
ASI-10 Intelligent Serial Adapter
The ASI-10 is an intelligent serial line converter that simplifies application software development and
improves overall performance. Dual, independent UARTS permit spooling commands at rates between
1200 and 115k baud. Specific operating instructions are contained in the ASI-10 Users Guide.
The ASI-10 has a built-in microcontroller that offers a number of features:
· Diagnostic LED’s
· Numerous Input baud rates
6
See “Multi-axis Serial Interface Connection” diagram shown previous.
D- 4 0 4
Use r s
M a nua l
1 9