Sinumerik Alarm 28031 Serious alarm on NCU %1 not yet acknowledged, axes still in follow-up mode
Parameters:
%1 = NCU number
Definitions:
A serious alarm was not yet acknowledged on another NCU. Consequently, all the axes continue to trail.
Reactions:
– Alarm display.
– Interface signals are set.
– NC not ready.
– Mode group not ready, also effective for single axes
– NC Start disable in this channel.
– NC Stop on alarm.
Remedy:
Acknowledge the alarm on the NCU.
Program Continuation:
Alarm display showing cause of alarm disappears. No further operator action
References
- Siemens Diagnostics Guide by Siemens