Mitsubishi Electric · MELSEC iQ-R I/O Module
This event code is registered in the event history if the attempt to disable the safety module function of the I/O module with diagnostic functions fails. This means 'Enable (1)' remains in Validation status area (Un\G5377) and the ALM LED does not flash (400ms cycle), preventing normal operation.
Click steps to track your progress.
Check that the set value in Command area for module invalidation (Un\G5376) is correctly set to 1234H.
Turn on and off 'Operating condition setting request' (Y12) again.
Check Validation status area (Un\G5377) to confirm that 'Disable (0)' is now stored.