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Siemens SINUMERIK Controller
Servo/Axis · Intermediate · 20-45 minutes
Siemens 840D 62307 - Channel block: Maximum number of characters per line
The alarm is triggerd by the following cycles: CYCLE105 Insufficient number of characters per line. Remedy: Increase the value in _PROTFORM[1]
62307
Siemens 840D 62307 - Channel block: Maximum number of characters per line
Channel block: Maximum number of characters per line
The alarm is triggerd by the following cycles: CYCLE105 Insufficient number of characters per line. Remedy: Increase the value in _PROTFORM[1]
Safety
- Refer to Siemens documentation
- Ensure qualified technician performs repairs
Common Causes
- NC program line exceeds character limit defined in _PROTFORM[1] parameter
- CYCLE105 invoked with insufficient character allocation per line
- G-code syntax or formatting creates unexpectedly long string representation
- Parameter _PROTFORM[1] set too low for current program complexity
Troubleshooting Steps
- 1Check the active NC program for oversized blocks, particularly those using CYCLE105, and review line lengths in the source code
- 2Verify current _PROTFORM[1] parameter value via machine diagnostics or parameter list and compare against required character count
- 3Increase _PROTFORM[1] value incrementally in steps of 10-20 characters until alarm clears; document the new value
- 4Rebuild or reload the affected program block and execute a dry run to confirm alarm resolution
- 5If using cycle-generated code, review CYCLE105 invocation parameters for any syntax that may generate excessive output
Seeing Multiple Alarms?
Seeing another alarm with this one? Enter the code.
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