61213

Common Causes

• Programmed circle radius is below the minimum allowable value for the selected cycle
• Incorrect center point or end point coordinates resulting in calculated radius smaller than cycle minimum
• Tool diameter or tool radius compensation creating an effective radius that falls below cycle threshold
• G-code syntax error where radius value was misinterpreted or entered with wrong units
• CAM post-processor generating undersized radius values incompatible with Siemens cycles

Troubleshooting Steps

1. 1Review the NC program at channel %1, block %2 and verify the circle radius specification matches design intent and cycle documentation
2. 2Check the cycle being used (CYCLE77, E_CR_HEL, E_PI_CIR, E_PO_CIR, E_PO_REC, F_PI_CIR, F_PO_CIR, or F_PO_REC) and confirm minimum radius requirements in the machine manual or cycle parameter list
3. 3Verify center point and end point coordinates are correct, then manually calculate the resulting radius to confirm it exceeds cycle minimum
4. 4Review tool compensation settings (tool diameter and radius offsets) to ensure they are not reducing the effective radius below acceptable limits
5. 5Correct the radius value, center point, or end point in the NC program and re-run the block to verify alarm clears