Rockwell Automation 1785-BCM_BEM, D17856.5.4 PLC-5 Backup Communication Module User Manual - Manual (Page 40)

Installing Your PLC-5 Backup System
Chapter 3
3-17
6. Connect the other end of the 1770-CD cable to terminals 1, 2, and 3
on the wiring arm of the Re
r mote I/O Adaptor module as shown in
Figure 3.10.
Making Data Highway Plus Connections
Figure 3.11 shows Channel 1A configured to establish communication
with Data Highway Plus network (default configuration). The connections
you must make for your PLC-5 backup system are between the:
PLC-5 and the 1785-BCM module
two 1785-BCM modules
1785-BCM module and Data Highway Plus network
Steps to make these connections follow the figure.
Figure 3.11
Data Highway Plus Connections
L o c a l I/O C h a s s is L o c a l I/O C h a s s is
1 7 9 8 6
PLC-5 processor PLC-5 processor
HSSL and Remote I/O link were previously connected but are not
shown for clarity.
Connections show default configuration with Channel 1A as Data
Highway Plus and Channel 1B as Remote I/O Scanner.
Make all connections with 1770-CD cable.
1785-BCM Module
1771-P4S
Power Supply
Data Highway Plus
Data Highway Plus Network
1785-BCM Module
1771-P4S
Power Supply