Sinumerik Alarm 4181 Channel %1 invalid assignment of an M auxiliary function number
%1 = Channel number
In machine data $MC_AUXFU_ASSOC_M0_VALUE or $MC_AUXFU_ASSOC_M1_VALUE, a number has been specified for the configuration of a new predefined M function which is occupied by the system, and cannot be used for an assignment. (M0 to M5, M17, M30, M40 to M45).
– Alarm display.
– Interface signals are set.
– Mode group not ready.
– Channel not ready.
– NC Start disable in this channel.
– NC Stop on alarm.
Configure an M function in machine data $MC_AUXFU_ASSOC_M0_VALUE or $MC_AUXFU_ASSOC_M1_VALUE which is not occupied by the system (M1 to M5, M17, M30, M40 to M45).
Switch control OFF – ON.
- Siemens Diagnostics Guide by Siemens