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Press RESET to clear the alarm and cancel the restart attempt.

Review the program line where interruption occurred and identify if it is within a canned cycle block, subprogram (between M98 and M99), or macro call.

Return to a safe position using manual mode (JOG or HANDLE), then restart the program from the beginning of the canned cycle or subprogram call block.

Ensure tool and workpiece clearance before manual moves to prevent collision

Use program restart search function to position to the identified safe restart block, verify modal conditions (G-codes, offsets, coordinate systems), then resume cycle start.

Press RESET and document the current machine position, active tool offset number, work coordinate system (G54-G59), and active modal G-codes displayed on screen.

Review what conditions existed at the point of interruption by examining the program block and previous modal commands (coolant, spindle, feed rate, plane selection).

Manually restore all modal conditions to match the restart point: reactivate correct work offset, tool offset, spindle state, coolant, feed override, and coordinate plane.

Perform program restart search to the desired block, verify all positions and modes match on the diagnostic screens, then initiate cycle start with feed hold ready.

Monitor first motion closely with hand on feed hold to verify correct restart behavior

Press RESET and access parameter settings. Check parameter 3407 (restart function enable/disable) to verify restart capability is enabled on the control.

Parameter changes require proper authorization and may require control restart

Verify parameters 3410-3412 (restart-related memory settings) are configured correctly for your machine and program complexity.

If parameters are correct, the program may be too complex for restart buffer. Return machine to program start position and restart program from beginning (O-number search and cycle start).

For recurring issues, consider program modification to add intermediate M01 (optional stop) commands at safe restart points, allowing controlled interruption at known states.