Rockwell Automation 1756-RIO ControlLogix Remote I/O Communication Interface Module User Manual - Manual (Page 100)

100 Publication 1756-UM534B-EN-P - November 2010
Chapter 5 Monitor Remote I/O
Monitor Remote I/O in Adapter Mode
The 1756-RIO module provides utilities to upgrade an existing remote I/O
application to a ControlLogix system with a minimum of downtime and
startup time. This function is referred to as Monitor mode.
Used in Monitor mode, the 1756-RIO adapter can be used to upgrade a PLC-
5, PLC-3, or SLC system to a ControlLogix system by providing discrete
inputs and outputs, and Block Transfer read and write data, to the controller.
You can replace the existing application, or control program, that’s running on
a PLC-5, PLC-3, or SLC system with a new application that runs on a
ControlLogix controller using the 1756-RIO module as the remote I/O
scanner.
TIP
The replacement system must be tested before the switchover.
It uses the same field wiring as the old system. If unanticipated
problems arise, you can switch back to the old system in
minutes.