Mitsubishi Melsec-Q Series User Manual page 471

(5) Operation in case of system switching occurrence during online module
change (When Redundant type extension base unit is used)
The following describes the procedures to be taken when the system switching occurs during online module
change is performed to the module mounted on the extension base unit in the Redundant CPU.
1) Connect GX Developer to the new control system.
2) Check the status of the module where the online module change was performed at [System Monitor].
3) When selecting [Online module change] in a status of a module being replaced online, screen shown in
Figure 12.30 is displayed.
4) Continue the operation that has been executed before system switching occurrence.
Figure 12.34 System monitor
Figure 12.35 Online module change screen
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