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Review the canned cycle block in the program and identify the R and Z values (or X for lathe radial drilling).

Verify R-plane is above (greater Z value in milling) the final depth Z value. For G98 return, ensure R is also below the initial starting height.

Check that R and Z are not equal values, as this creates zero depth condition.

Correct the R or Z parameter to establish proper clearance and depth relationship, then reset alarm and restart program.

Identify which canned cycle (G73, G76, G81, G83, etc.) is active in the alarm block and reference the Fanuc programming manual for required parameters.

Verify all mandatory parameters are present: Z (depth), R (retract plane), and F (feedrate) are required for most drilling cycles. G83 peck drilling also requires Q (peck depth).

Check if the cycle was properly initialized with hole position (X, Y coordinates) in the same block or a previous modal block.

Add missing parameters with appropriate values, ensure G80 cancels previous cycles if needed, reset and rerun program.

Examine Q value in peck drilling cycles (G73, G83) - must be positive and less than total depth (R to Z distance).

Check P dwell values in G82, G89 cycles - must be positive (typically in milliseconds or seconds depending on parameter setting).

Verify Q shift amount in G76 fine boring is reasonable and does not cause interference or impossible tool movement.

Correct the invalid parameter to a positive, logical value appropriate for the machining operation, reset alarm and continue.

Excessively large Q values may cause tool breakage - verify chip evacuation strategy