Siemens SINUMERIK codes
Siemens SINUMERIKServo/AxisIntermediate30-60 minutes

61322

Siemens 840D 61322 - Channel Block: Check 4th number of _KNUM

Channel Block: Check 4th number of _KNUM

The specified position of _KNUM includes invalid values. Also check _MVAR. Alarm is triggered: CYCLE974, CYCLE977, CYCLE978, CYCLE979, CYCLE994, CYCLE998, CYCLE114. Remedy: Check parameter _KNUM, _MVAR.

Safety

  • Refer to Siemens documentation
  • Ensure qualified technician performs repairs

Common Causes

  • Invalid tool offset number in _KNUM parameter exceeds machine tool table range
  • Corrupted or incomplete tool offset data in _MVAR variable assignment
  • Tool offset number contains non-numeric or out-of-range values in 4th position
  • Macro variable _MVAR references undefined or deleted tool offset
  • Cycle subroutine parameter passing error between CYCLE974/977/978/979/994/998/114

Troubleshooting Steps

  1. 1Verify _KNUM parameter value and confirm 4th digit corresponds to valid tool offset number within machine configuration limits
  2. 2Access machine diagnostics to inspect _MVAR variable contents and validate all referenced tool offset indices exist in tool table
  3. 3Review active cycle subroutine (CYCLE974, CYCLE977, CYCLE978, CYCLE979, CYCLE994, CYCLE998, or CYCLE114) parameter declarations and correct any invalid offset assignments
  4. 4Clear any pending macro variable assignments and reload tool offset table from backup or reset to factory defaults if data corruption is suspected
  5. 5Execute manual tool offset entry test to isolate whether issue is parameter definition or cycle execution logic

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