Rockwell Automation 1771-KA2 Communication Adapter Module - Manual (Page 15)

Station Hardware
Chapter 2
2-5
To connect any programming terminal to the PROGRAM INTERFACE
connector, use a program panel interconnect cable (cat. no. 1772-TC).
With a 1772-KA2 module installed, the PROGRAM INTERFACE
connector substitutes for the PROGRAM PANEL connector on PLC-2/20
or PLC-2/30 processors or the INTERFACE socket on the Mini-PLC-2,
Mini-PLC-2/05, or Mini-PLC-2/15. This means that all interaction
between the processor and the programming terminal is controlled
through the communication adapter module. This interaction includes
program entry and any functions that involve peripheral devices except
cassette loads--including report generation, contact histograms, and
generation of program copies on paper or on punched tape.
The communication rate over this channel is 9600 baud.
Optical-electrical isolation is provided between receiving circuitry on this
channel and module logic circuitry.
NOTE: The PROGRAM INTERFACE connector need not connect to a
programming terminal for the module to operate. This connector serves as
a programming terminal connection whenever such a device is needed for
program entry, editing or monitoring.
Processor Connector
The lower connector of the module connects to the station PLC-2/20 or
PLC-2/30 processor, or Mini-processor module. (Refer to Figure 2.1 and
Figure 2.2) A Data Highway/Processor cable, described in section titled
“Cables,” is used for this connection.
Indicators
There are 5 LED indicators on the front of the module, as seen in
Figure 2.5.
These indicators are useful for monitoring module activity and for
troubleshooting. Three green indicators show module status during
normal receiving and transmitting of messages. Two red indicators show
the status of module diagnostics.