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Siemens SINUMERIK Controller
Servo/Axis · Intermediate · 30-60 minutes
Siemens 840D 7020 - Compile cycle alarm number has not been defined
The alarm ID used by the manufacturer is not known to the system. This was not allocated when the alarms were generated.
7020
Siemens 840D 7020 - Compile cycle alarm number has not been defined
Compile cycle alarm number has not been defined
The alarm ID used by the manufacturer is not known to the system. This was not allocated when the alarms were generated.
Safety
- Refer to Siemens documentation
- Ensure qualified technician performs repairs
Common Causes
- Machine builder did not define custom alarm 7020 during system configuration or alarm generation
- Alarm definition file corrupted or missing from system memory
- Incorrect or incomplete alarm catalog loaded during commissioning
- CNC software update overwrote custom alarm definitions without backup
- RAM battery failure caused loss of custom alarm configuration data
Troubleshooting Steps
- 1Verify alarm 7020 definition exists in the machine builder's alarm catalog documentation and commissioning files
- 2Access the CNC's alarm management system and check if alarm 7020 is listed in the active alarm table
- 3Reload the alarm definition file from backup or re-import the original alarm catalog through the system parameter interface
- 4Contact the machine builder to obtain the correct alarm definition and implementation procedure for alarm 7020
- 5If no definition exists, consult with machine builder to determine if alarm 7020 should be defined or if the triggering cycle logic requires correction
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Always verify with your machine manual or a certified technician before performing service procedures.