Sinumerik Alarm 1003 Alarm pointer for this self-clearing alarm %1 is zero
%1 = Incorrect alarm number
The address (zero pointer) used by the compile cycle manufacturer or by the operating system for self-clearing alarms is not allowed in the system.
– Alarm display.
Make a note of the error text and contact Siemens AG A&D MC, Hotline (tel./fax: see alarm 1000) Check setCCAlarm/setAlarm (…) call.
Clear alarm with the Delete key or NC START.
- Siemens Diagnostics Guide by Siemens