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Siemens SINUMERIK Controller
Servo/Axis · Intermediate · 30-60 minutes
Siemens 840D 61530 - Channel block: Default longitudinal position incorrect
The alarm can be triggered by the following grinding cycles: CYCLE420 Remedy: Check longitudinal position parameter
61530
Siemens 840D 61530 - Channel block: Default longitudinal position incorrect
Channel block: Default longitudinal position incorrect
The alarm can be triggered by the following grinding cycles: CYCLE420 Remedy: Check longitudinal position parameter
Safety
- Refer to Siemens documentation
- Ensure qualified technician performs repairs
Common Causes
- Longitudinal position parameter in CYCLE420 is set outside valid machine range
- Machine reference point not properly established before cycle execution
- Workpiece coordinate system offset is incorrect or not initialized
- Tool offset or work offset values causing calculated position to exceed axis limits
Troubleshooting Steps
- 1Verify machine has been homed and all reference points are established; perform a complete axis reference cycle if needed
- 2Check the longitudinal position parameter values in the CYCLE420 call against machine specifications and available axis travel limits
- 3Review and correct any active work offset, tool offset, or coordinate system shifts that may be offsetting the intended position
- 4Inspect the part program for conflicting or cumulative positioning commands that could push the axis beyond safe operating range
- 5Clear the alarm, re-run the cycle with verified parameters, and monitor axis position feedback during execution
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