Applicable Systems
CTX
DMU
Milltap
NMV
CMX
Symptoms
The safety door interlock has been violated during operation. Alarm 1200 is displayed on the DMG MORI control.
Possible Causes
- Machine tool builder-specific fault
- Safety interlock or sensor fault
- Drive or servo system fault
- Program or parameter error
Troubleshooting Steps
- Step 1: Read the alarm message on the DMG MORI HMI for alarm 1200
Full alarm description displayed - Step 2: Check the machine tool builder's alarm list for specific cause and remedy
Alarm cause and corrective action identified - Step 3: Investigate the affected machine subsystem (spindle, axis, ATC, safety, etc.)
Root cause identified through systematic diagnosis - Step 4: Correct the fault and acknowledge the alarm with RESET
Alarm clears after fault correction
How to Reset
Correct the fault and press RESET on the HMI. Refer to the DMG MORI machine-specific operating manual for detailed troubleshooting procedures.
Frequently Asked Questions
- Q: What does DMG MORI alarm 1200 mean?
Safety Door Interlock: The safety door interlock has been violated during operation.
- Q: Where can I find DMG MORI alarm code documentation?
Refer to the DMG MORI operating manual for your specific machine model (CTX, DMU, Milltap, CMX, or NMV series). The alarm list is in the troubleshooting section of the manual.
Source: DMG MORI Operating Manual, DMG MORI AG
Category: CNC