What causes FANUC alarm 232?

Machine system or function indicated by the alarm name has detected a fault. Control parameter or configuration error related to the alarm condition. Hardware component fault on the CNC or machine. Part program error or illegal operation for the indicated function. Machine interlock or safety condition not satisfied.

How do I fix FANUC alarm 232?

1. Note the alarm number and check the Fanuc alarm screen for any sub-code or additional details. 2. Identify the specific machine system or function from the alarm name. 3. Power cycle the machine to clear transient faults. 4. Consult the Fanuc parameter or operator manual for alarm 232 specific remedy. 5. Contact Fanuc service if the alarm persists after basic troubleshooting.

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FANUC Controller

Program/G-code · Intermediate · 15-30 minutes

Alarm 232

Fanuc Alarm 232 - TOO MANY HELICAL AXIS COMMAND

Fanuc Alarm 232 occurs when a G02/G03 circular or helical interpolation command specifies three or more axes simultaneously. Helical interpolation on Fanuc controls allows only one linear axis to be interpolated with the circular motion plane (two axes), for a maximum total of three axes, not three helical axes.

FANUCProgram/G-codeIntermediate15-30 minutes

232

Fanuc Alarm 232 - TOO MANY HELICAL AXIS COMMAND

SYSTEM ALARM 232

Root Cause Summary

Fanuc Alarm 232 occurs when a G02/G03 circular or helical interpolation command specifies three or more axes simultaneously. Helical interpolation on Fanuc controls allows only one linear axis to be interpolated with the circular motion plane (two axes), for a maximum total of three axes, not three helical axes.

Causes and Fixes

1
Review the alarmed program block in EDIT mode. Identify all axis addresses (X, Y, Z, A, B, C, U, V, W) specified in the G02 or G03 command and verify if more than three axes are commanded.
2
Verify the active plane selection (G17 for XY, G18 for ZX, G19 for YZ) prior to the helical interpolation command. The two axes defining the circular motion must match the active plane, with only one additional axis permitted for helical motion.
3
Correct the program by removing excess axis specifications. For example, in G17 plane (XY circular), only X, Y, and optionally Z are permitted. Remove any fourth axis command (A, B, C, or additional linear axes).
4
Reset the alarm (RESET key), return to program start or safe position using MDI mode, and re-execute the corrected block in single block mode to verify proper operation.
Ensure tool position is safe before program restart to avoid collision with workpiece or fixtures.

DIY Feasiblehigh confidence

Call a technician if:

·Parameter changes don't resolve the issue
·Alarm persists with simple helical interpolation commands
·Suspected control software corruption

Prevention

Always verify plane selection before helical interpolation
Use consistent coordinate systems throughout programs
Test helical interpolation with simple commands before complex operations
Document macro variable usage in helical interpolation

Common Mistakes

Specifying I, J, and K values simultaneously in helical interpolation
Mixing absolute and incremental coordinates in helical commands
Not clearing previous plane selections
Using undefined macro variables in axis specifications

Related Alarms

020 021 033 034

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