Sinumerik Alarm 120302 The selection is not possible. A program has to have been edited first via the area ‘Program’.
A program can only be selected via the hardkey program if a program has already been edited in the program area.
– Alarm display.
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