Cause
You use the PLC import interface Schneider Schneider Unity Pro: In the case of the M340 product line the PLC boxes for connecting the racks with each other are not contained in the import file.
Solution
- Ensure that existing rack extensions are configured with the right hardware.
- Import the PLC data again.
Note:
Using a new check run (any desired scheme) this module-specific message can be deleted from the message management dialog.