Configure A 1756-En4Tr Redundant Adapter Pair - Rockwell Automation Allen-Bradley ControlLogix 1756-EN2F User Manual

Chapter 3 Connect Redundant EtherNet/IP Adapters
Configure a 1756-EN4TR
Redundant Adapter Pair
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Adapter Qualification
In a Redundant Adapter configuration, one adapter takes the Primary role and
a second adapter becomes Qualified Secondary ready to take I/O control in the
event that the primary becomes disqualified.
To complete the qualification process the following conditions must be met.
The modules must:
• have the same firmware revision.
• reside in slots 0 and 1 of the same chassis.
• be initially set to the same IP address.
• have at least one Ethernet port link active.
• be connected to the same Ethernet network.
To configure a 1756-EN4TR redundant adapter pair, use the following steps.
1. To set the IP address, see
2. Make sure you are using Logix Designer in the offline mode.
3. In the I/O configuration tree, add the 1756-EN4TR in slot 0.
4. Name your module and enter the IP Address.
Do not put any devices in slot 1 in the I/O configuration tree.
IMPORTANT
5. Click change under the module definition pane, and select "Yes" for
redundancy.
Rockwell Automation Publication 1756-UM004C-EN-P - June 2021
page 28.