Sinumerik Alarm 109004 No switchover: PLC occupied by higher-priority MMC’s
Definitions:
The MMC is attempting to switch to an NCU that is occupied by two higher-priority MMC’s.
Reactions:
– –
Remedy:
Switch one of the two higher-priority MMC’s to another NCU.
Program Continuation:
Internal
References
- Siemens Diagnostics Guide by Siemens