Rockwell Automation 1785-BCM_BEM, D17856.5.4 PLC-5 Backup Communication Module User Manual User Manual
Page 36
Installing Your PLC-5 Backup System
Chapter 3
3-13
Making Remote I/O Connections
Figure 3.7 shows Channel 1B configured to establish communication with
the remote I/O scanner mode (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 Remote I/O Adapter module
Steps to make these connections follow the figure.
Figure 3.7
Remote I/O Connections
1771 –P4S
Power Supply
1785 –BCM Module
1771 –P4S
Power Supply
1785 –BCM Module
Local I/O Chassis
Local I/O Chassis
Remote
I/O
Remote
I/O
Remote I/O Chassis No. 1
Remote I/O Chassis No. n
17981
Remote
I/O
Remote I/O
Connections show default configuration with Channel 1A as Data Highway Plus and
Channel 1B as Remote I/O Scanner.
HSSL was previously connected but is not shown for clarity.
Make all connections with 1770-CD cable.
PLC-5 processor
PLC-5 processor
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