Rockwell Automation Publication 1756-UM535D-EN-P - November 2012 43
Design an Enhanced Redundancy System Chapter 2
You can bridge these networks via a remote chassis:
• ControlNet
• DeviceNet
• EtherNet/IP
• Universal Remote I/O
• Data Highway Plus
This table indicates what system components can be used with each network
connected to a redundant system.
Table 8 - Communication Networks Available For Use with Enhanced Redundancy Systems
Network Connection to Redundant System Component
I/O HMI
ControlNet Directly to redundant chassis Yes Yes
Via a bridge No Yes
DeviceNet Via a bridge Yes Yes
EtherNet/IP Directly to redundant chassis Yes - Enhanced
Redundancy System,
Revision 19.052 or later
Yes
(1)
(1) To avoid a brief loss of communication with the redundant chassis pair in the event of a switchover, we recommend
that you connect the HMI to the redundant chassis pair via a bridge from an EtherNet/IP network to a ControlNet
network. For more information see Possible Communication Delays on EtherNet/IP Networks on page 36
.
Via a bridge No Yes
Universal Remote I/O Via a bridge Yes Yes
Data Highway Plus Via a bridge Yes Yes
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