Sinumerik Alarm 120307 The file %1 cannot be opened for the editor because it is selected in channel %2 for execution from external sources.
%1 = Program name with path
%2 = Channel number
– Alarm display.
A different program on the NCU or for execution from external sources has to be selected. The alarm disappears automatically as soon as a program is edited or simulated in the program area. The alarm can also be acknowledged manually via diagnostics.
- Siemens Diagnostics Guide by Siemens