Sinumerik Alarm 16946 Channel %1 start via START is not allowed
%1 = Channel ID
This alarm is active with “Group Serupro” only. “Group Serupro” is activated by means of “$MC_SERUPRO_MODE BIT2” and enables the retrace support of entire channel groups during block search. The machine data $MC_DISABLE_PLC_START specifies which channel is generally started from the PLC and which channel is only allowed to be started from another channel via the START part program command. This alarm occurs if the channel was started via the START part program command and $MC_DISABLE_PLC_START==FALSE was set.
– Alarm display.
Modify $MC_DISABLE_PLC_START of switch off “Group Serupro” (see $MC_SERUPRO_MODE).
Clear alarm with the Delete key or NC START.
- Siemens Diagnostics Guide by Siemens