Rockwell Automation 1785-BCM_BEM, D17856.5.4 PLC-5 Backup Communication Module User Manual - Manual (Page 44)

Chapter
4
4-1
Installing Your 1785-BEM Module
This chapter:
describes the 1785-BEM backup expansion module
identifies major components of the 1785-BEM module
provides an overview of an installed PLC-5/40, -5/60, or -5/80
backup system
provides procedures for determining power supply requirements
provides procedures for installing your 1785-BEM modules
provides procedures for connecting the 1785-BEM modules in the
PLC-5 backup system
The 1785-BEM is the backup expansion module for the 1785-BCM
series B module. It has the capability of switching two additional
configurable communication channels when you are using a 1785-BCM
series B module with a PLC-5/40, -5/60, or PLC-5/80 processor.
The major components of a 1785-BEM module are:
status indicators
1771-WG wiring arm
1785-BEM communication links
- Data Highway Plus (DH+)
- remote I/O (RIO)
customer relay (contact)
switch
assembly
I/O backplane interface
Chapter Objectives
Backup Expansion Module
Hardware Components