36 Rockwell Automation Publication 1756-UM004D-EN-P - August 2022
Chapter 3 Connect Redundant EtherNet/IP Adapters
Redundant adapters can be used in a star configuration, as shown in Figure .
However, the switch at the center of the star is a single point of failure. DLR
provides for higher resiliency.
Figure 3 - Redundant 1756-EN4TR Adapters in Star Topology with a Single Switch
R
1756-EN4TR pair
1756-EN4TR or
1756-EN2T
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