Rockwell Automation 1756-RMxx ControlLogix Enhanced Redundancy System User Manual - Manual (Page 42)

42 Rockwell Automation Publication 1756-UM535D-EN-P - November 2012
Chapter 2 Design an Enhanced Redundancy System
Other Communication
Networks
You can use only EtherNet/IP and ControlNet networks, and corresponding
modules, in enhanced redundancy systems.
You can bridge to other communication networks outside of the redundant
chassis. For example, you can bridge to a Universal Remote I/O network via a
remote chassis.
Figure 9 - Example of Bridging to Remote I/O on Various Networks
IMPORTANT Do not use the redundant chassis to bridge between networks. Bridging
through the redundant chassis to the same or different networks, or routing
messages through redundant chassis is not supported.
CH2 CH1 OK CH2 CH1 OK
Chassis Bridge from ControlNet to Remote I/
O Networks
To Universal I/O Network
To EtherNet/IP Network
IMPORTANT: Cannot bridge to
I/O modules.
To DeviceNet Network
HMI Workstation
Ethernet
Switch
Primary Chassis Secondary Chassis