61540

Common Causes

• D number programmed in grinding cycle exceeds the maximum allowable value defined by _GC_DNUM parameter
• Dresser D field is active while attempting to execute a grinding cycle that requires a tool D number
• Tool offset table D number reference does not exist or is out of valid range
• Incorrect cycle syntax or D parameter value in CYCLE401, CYCLE402, CYCLE403, or CYCLE443
• Machine parameter _GC_DNUM set to value lower than D numbers being called in the program

Troubleshooting Steps

1. 1Verify the D number used in the grinding cycle is less than the _GC_DNUM parameter value; check current _GC_DNUM setting in machine parameters
2. 2Review the NC program block at the indicated location and confirm D number syntax matches cycle requirements; compare against cycle documentation
3. 3Deactivate any active dresser D field operations before executing grinding cycles; ensure grinding tool D is properly selected
4. 4Check tool offset table to confirm the D number reference exists and is properly configured for the grinding operation
5. 5If D numbers are correct, increase _GC_DNUM parameter value to accommodate the tool offset numbers being called, then reload and test