Click the synchronization tab in the rmct, Click synchronize secondary, then click yes – Rockwell Automation 1756-RMxx ControlLogix Enhanced Redundancy System User Manual User Manual
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Upgrade from a Standard Redundancy System or to Another Enhanced Redundancy System
Appendix C
28. After the update completes, reconnect the Ethernet cable or cables to the
secondary Ethernet module and wait for communication to resume on the
network.
29. Repeat
steps 23
for all Ethernet modules that have their rotary
switches set between 2…254.
30. In RSLinx Classic software, browse to the primary 1756-RM module.
31. Right-click to select Module Configuration to open the RMCT.
32. Click the Synchronization tab in the RMCT.
33. Click Synchronize Secondary, then click Yes.
34. After the redundant chassis pair synchronizes, select Initiate Switchover
from the Synchronization tab in the RMCT, then click Yes.
35. Remove the new secondary Ethernet module from the chassis and reset
the rotary switches back to their original setting from 999.
36. Reinsert the secondary Ethernet module back in the chassis and wait until
network communication resumes.
37. Repeat
steps 35
for all Ethernet modules that have their rotary
switches set between 2…254.