Sinumerik Alarm 28030 Serious alarm on NCU %1, axes in follow-up mode
%1 = NCU number
All axes are trailing because of a serious alarm on another NCU.
– Alarm display.
– NC not ready.
– Mode group not ready, also effective for single axes
– Interface signals are set.
– NC Start disable in this channel.
– NC Stop on alarm.
Acknowledge the alarm on the NCU.
Clear alarm with the RESET key in all channels of this mode group. Restart part program.
- Siemens Diagnostics Guide by Siemens