Rockwell Automation Publication 1756-UM004D-EN-P - August 2022 39
Chapter 3 Connect Redundant EtherNet/IP Adapters
PRP Architecture with
RedBox Switches
PRP, including RedBox switches, must be properly designed, built, and
configured based on CPwE guidelines. For more information, see the
Deploying Parallel Redundancy Protocol within a Converged Plantwide
Ethernet Architecture Technical Data.
With Logix Designer application version 33 and 1756-EN4TR firmware 3.001,
you can use 1756-EN4TR redundant adapters in the I/O chassis with PRP as
shown in Figure 6
.
• The 1756-EN4TR firmware 3.001 does not natively support PRP, which is
why the 1756-EN4TRs must be connected to RedBox switches.
• The 1756-EN4TR firmware 3.001 does not support the 1756-EN4TR being
placed in the redundant chassis pair, so the 1756-EN2TP is the module
being used to connect the redundant chassis pair to the PRP LAN A and
LAN B.
Figure 6 - PRP Network with RedBox Switches and Redundant Adapters
LAN A
LAN B
RedBox 1
RedBox 2
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