What causes FANUC alarm 214?

Attempting to change the coordinate system or use shift-type tool length compensation during synchronous control mode. Incorrect G-code programming that conflicts with the active synchronous control mode. Improper configuration of the synchronous control parameters in the Fanuc control.

How do I fix FANUC alarm 214?

1. Check the active G-code program and look for any commands that may be modifying the coordinate system or using shift-type tool length compensation while in synchronous control mode. 2. Verify the synchronous control parameters in the Fanuc control are configured correctly for the current application. 3. Try running the program in a non-synchronous control mode to isolate if the issue is specific to the synchronous control functionality. 4. Review the part program and machine setup to ensure there are no unexpected changes to the coordinate system or tool length compensation being made during the synchronous control operation. 5. If the issue persists, consult the Fanuc control documentation or contact Fanuc technical support for further guidance on properly configuring and using synchronous control mode.

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FANUC Controller

Program/G-code · Intermediate · 30-60 minutes

Alarm 214

Fanuc Alarm 214 - ILLEGAL COMMAND IN SYNCHRO-MODE

Alarm 214 occurs when a G-code command attempts to perform coordinate system setting (G92, G54-G59, G10 L2/L20) or shift-type tool length compensation (G43/G44/G49) while synchronous control mode is active. Synchronous control typically involves coordinated spindle-spindle or axis-spindle operations where these commands would disrupt the synchronized relationship.

FANUCProgram/G-codeIntermediate30-60 minutes

214

Fanuc Alarm 214 - ILLEGAL COMMAND IN SYNCHRO-MODE

SYSTEM ALARM 214

Root Cause Summary

Alarm 214 occurs when a G-code command attempts to perform coordinate system setting (G92, G54-G59, G10 L2/L20) or shift-type tool length compensation (G43/G44/G49) while synchronous control mode is active. Synchronous control typically involves coordinated spindle-spindle or axis-spindle operations where these commands would disrupt the synchronized relationship.

Causes and Fixes

1
Review the program around the alarm occurrence. Search for G92, G54-G59, G10 L2, or G10 L20 commands that appear after synchronous mode activation (typically G51.2 for spindle synchronization or parameter-based tandem control).
2
Check SYSTEM > PARAM and verify parameters 4900#0 (spindle synchronization), 8151-8154 (tandem axis settings), or 1024#5 (Cs contour control) to identify active synchronous control modes.
3
Modify the program to issue coordinate system commands before entering synchronous mode or after canceling it with G51.2 P0 (for spindle sync) or appropriate tandem control cancel command.
4
If coordinate shifts are necessary during synchronized operations, use G52 local coordinate system instead of G92 or work coordinate changes, as G52 may be permitted depending on parameters 5400#0 and machine configuration.
Verify G52 compatibility with your specific synchronous application before implementation.

DIY Feasiblehigh confidence

Call a technician if:

·Parameter corruption suspected
·Sync control hardware malfunction
·Repeated alarms after program correction

Prevention

Structure programs to set coordinates before sync mode
Use program templates for sync operations
Implement proper sync mode cancellation sequences

Common Mistakes

Forgetting to cancel sync mode before tool changes
Using G92 within synchronized machining cycles
Mixing coordinate system changes with sync operations

Related Alarms

213 215 216

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