Sinumerik Alarm 16904 Channel %1 program control: action %2 not allowed in the current state
%1 = Channel number
%2 = Action number/action name
The operation (program, JOG, block search, reference point, etc.) cannot be started or continued in the current status.
– Alarm display.
Check the program status and channel status.
Clear alarm with the Delete key or NC START.
- Siemens Diagnostics Guide by Siemens