Rockwell Automation Publication 1756-UM535D-EN-P - November 2012 179
Program the Redundant Controller Chapter 7
Store a Project While the Controller is in Program or Remote Program 
Mode
If you want to store your controller project in nonvolatile memory while your 
redundant system is not running, complete these steps. Before you begin, verify 
that a controller communication path has been specified and that you are able to 
go online with the primary controller.
1. Verify that the redundant chassis are synchronized. If they are not 
synchronized, synchronize them.
2. Use RSLogix 5000 software or the mode switch to put the primary 
controller into Program or Remote Program mode.
3. In RSLinx Classic communication software, right-click the 1756-RM 
module and choose Module Configuration to open the RMCT.
4. In the Configuration tab, set the Auto-Synchronization parameter to 
Conditional.