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Locate the line number shown with the alarm and examine the canned cycle block (G73-G89).

Verify the current plane selection (G17=XY/Z-depth, G18=ZX/Y-depth, G19=YZ/X-depth) matches the programmed axes.

Ensure the drilling axis (depth axis) corresponds to the perpendicular axis of the selected plane and radial positioning uses the correct two axes.

Correct the axis letters in the canned cycle or add the appropriate plane selection code (G17/G18/G19) before the cycle.

Check that the initial canned cycle call (G73-G89) contains all required addresses: X, Y (or radial positions), Z (depth), R (retract/reference plane), Q (peck depth if applicable), and F (feedrate).

Verify the R-plane value is programmed and is positioned between the initial Z-level and the final Z-depth in the correct direction.

Confirm that modal values are still active if using abbreviated format in subsequent cycle repetitions (addresses can be omitted only if previously defined).

Add missing axis data or reprogram the complete canned cycle with all required parameters explicitly stated.

Search backward in the program from the alarm point for G80 or plane change commands (G17/G18/G19).

Verify that after any G80 cancellation, the next canned cycle includes complete axis and parameter data, not relying on previous modal values.

Check that no plane selection change occurred between the canned cycle definition and its execution points.

Restructure the program to include full canned cycle parameters after G80 or maintain consistent plane selection throughout the cycle operations.

Changing planes during active canned cycles will cause immediate alarm conditions.