Siemens 840D 61322 - 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.
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
1Verify _KNUM parameter value and confirm 4th digit corresponds to valid tool offset number within machine configuration limits
2Access machine diagnostics to inspect _MVAR variable contents and validate all referenced tool offset indices exist in tool table
3Review active cycle subroutine (CYCLE974, CYCLE977, CYCLE978, CYCLE979, CYCLE994, CYCLE998, or CYCLE114) parameter declarations and correct any invalid offset assignments
4Clear any pending macro variable assignments and reload tool offset table from backup or reset to factory defaults if data corruption is suspected
5Execute manual tool offset entry test to isolate whether issue is parameter definition or cycle execution logic
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