Rockwell Automation 1785-BCM_BEM, D17856.5.4 PLC-5 Backup Communication Module User Manual - Manual (Page 19)

Understanding the 1785-BCM
Hardware Components
Chapter 2
2-3
Figure 2.2
1785-BCM Module Communication Links
High Speed Serial Link
Customer Relay
From Controller
From Controller
1
Sh
2
1
2
1
Sh
2
1
Sh
2
1
Sh
2
1
Sh
2
Not Used
Not Used
Not Used
1
To Link
(RIO/DH+)
Channel 1A
(Remote I/O or
Data Highway Plus)
Channel 1B
(Remote I/O or
Data Highway Plus)
2
To Link
(RIO/DH+)
19082
1 Terminals 9, 10, and 11 are connected between the 1785–BCM modules in the backup
system; in addition terminals 9, 10, and 11 of one of the 1785 BCM modules are connected to
the DH+ network or to the remote I/O link.
2 Terminals 15, 16, and 17 are connected between the 1785–BCM modules in the backup
system; in addition terminals 15, 16, and 17 of one of the 1785 BCM modules are connected
to the DH+ network or to the remote I/O link.