12700

Common Causes

• Modal cycle (such as drilling, tapping, or boring cycle) is active while attempting to define contour geometry in the same block
• Ambiguous parameter interpretation where address codes (e.g., R parameter) could mean different things to different cycles
• Mixing contour programming syntax with active modal cycle commands without clearing the cycle first
• Operator attempting to nest contour definition within a canned cycle without proper cycle cancellation

Troubleshooting Steps

1. 1Review the NC program block triggering the alarm and identify which modal cycle is active (check for G81, G82, G83 or equivalent drilling/tapping cycles)
2. 2Cancel the active modal cycle by programming G80 or equivalent cycle-off command before attempting any contour definition programming
3. 3Restructure the program to separate contour definition blocks from modal cycle blocks, ensuring each operation completes before the next begins
4. 4Verify that address codes (particularly R, Z, and other parameters) are not being reused with conflicting meanings between the cycle and contour definition
5. 5Test the corrected program in simulation mode before running on the machine