What causes FANUC alarm 297?

Part program contains an illegal G-code or M-code combination for this alarm type. Missing or incorrect address word in the program block. Axis or parameter value out of range for the commanded function. Required option not enabled on this CNC for the commanded function. Conflict between active modal states and the commanded function.

How do I fix FANUC alarm 297?

1. Note the block number shown on the alarm screen and locate that block in the program. 2. Review the command in that block against the Fanuc programming manual for alarm 297. 3. Check for missing address words, incorrect values, or conflicting G-code combinations. 4. Verify any required CNC options are enabled if using advanced functions. 5. Correct the program and verify the fix before restarting machining.

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FANUC Controller

Program/G-code · Intermediate · 5-30 minutes

Alarm 297

Fanuc 297 - Figure copy axis error

Alarm 297 occurs when using the Figure Copy function (G72.1/G72.2) with incorrectly specified axes or axis combinations that are not valid for the control's configuration. This alarm is triggered when the programmed axis designation conflicts with the machine geometry, uses non-existent axes, or violates the plane selection rules for figure copying operations.

FANUCProgram/G-codeIntermediate5-30 minutes

297

Fanuc 297 - Figure copy axis error

FIGURE COPY AXIS ERROR

Root Cause Summary

Alarm 297 occurs when using the Figure Copy function (G72.1/G72.2) with incorrectly specified axes or axis combinations that are not valid for the control's configuration. This alarm is triggered when the programmed axis designation conflicts with the machine geometry, uses non-existent axes, or violates the plane selection rules for figure copying operations.

Safety

Verify corrected program or parameters before resuming machining

Causes and Fixes

1
Review the program line containing G72.1 or G72.2 and identify which axes are specified in the command.
2
Verify the current plane selection (G17=XY, G18=ZX, G19=YZ) matches the axes used in the figure copy command.
3
Check parameter 1022 (axis configuration) to confirm all programmed axes exist and are properly configured on the control.
Viewing parameters only - do not modify without backup and authorization
4
Correct the program to use only the two axes that define the active working plane, ensuring syntax matches the control's figure copy format requirements.

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