Rockwell Automation Publication 1756-RM010C-EN-P - August 2018
49
Replacement Considerations
Chapter 2
Replace a 1756-RM Module with
a 1756-RM2 Module
You can replace 1756-RM modules with 1756-RM2 modules without
initiating a switchover.
1. Install the compatible version of the RMCT software.
You must shut down RSLinx Classic software to install the software, and
then restart RSLinx Classic software after the installation is complete.
2. On the RMCT Configuration tab, from the Auto-Synchronization
pull-down menu, choose Never.
3. Disqualify the redundant chassis pair (if not already disqualified) by
using the RMCT.
4. Unplug the fiber cable or cables from both of the redundancy modules.
5. Close any open RMCT sessions that are connected to the current
redundancy modules that are being replaced.
6. Remove the redundancy module pair (in any order) from the redundant
chassis.
7. Insert the 1756-RM2 redundancy module pair (in any order) in the
redundant chassis into the same slots as the redundancy modules.
8. If not already installed, use RSLinx Classic software to upload the EDS
file for the 1756-RM2 module. If needed, obtain the EDS file for the
1756-RM2 module.
Follow the procedure that is described in
EDS Files on page 35
9. Update the primary and secondary 1756-RM2 modules to the
appropriate firmware revision.
10. Reconnect the fiber cable on either CH1 or CH2 of the 1756-RM2
redundancy module.
11. Optional: Connect a second fiber cable on the remaining channel for
fiber redundancy.
12. Wait for at least 45 seconds after connecting the fiber cables.
13. Launch the RMCT again for the newly installed 1756-RM2 modules.
14. On the RMCT Configuration tab, from the Auto Synchronization pull-
down menu, choose your original value.
15. Synchronize the system again (if it is not already qualified) by using the
RMCT.
Summary of Contents for ControlLogix 5570 series
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