What causes FANUC alarm 514?

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 514?

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 514 specific remedy. 5. Contact Fanuc service if the alarm persists after basic troubleshooting.

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FANUC Controller

Overtravel/Limit · Intermediate · 30-60 minutes

Alarm 514

Fanuc Alarm 514 - INTERFERENCE: +n

Fanuc 514 INTERFERENCE: +n alarm occurs when the rotation area interference check function detects that the programmed tool path or axis movement exceeds the allowable rotation area on the positive side of the specified axis (typically A, B, or C rotary axis). This is a safety interlock preventing collision between the workpiece/fixture and machine components during rotary axis motion.

FANUCOvertravel/LimitIntermediate30-60 minutes

514

Fanuc Alarm 514 - INTERFERENCE: +n

SYSTEM ALARM 514

Root Cause Summary

Fanuc 514 INTERFERENCE: +n alarm occurs when the rotation area interference check function detects that the programmed tool path or axis movement exceeds the allowable rotation area on the positive side of the specified axis (typically A, B, or C rotary axis). This is a safety interlock preventing collision between the workpiece/fixture and machine components during rotary axis motion.

Causes and Fixes

1
Navigate to SYSTEM > PARAM and check parameters 11310-11319 (rotation area interference check enable/disable for each axis). Verify bit settings for the affected +n axis.
2
Check parameters 11320-11329 (positive side interference angle) and 11330-11339 (negative side interference angle) for the affected rotary axis. Verify these values match machine mechanical limits and current workpiece setup.
3
Review parameter 11300 bit settings to confirm rotation area interference check is properly configured (bit 0: check method, bit 1: alarm type). Adjust if interference limits need expansion for current operation.
Increasing interference limits may allow collisions. Verify clearances with dry run at reduced feedrate before production.
4
If parameters are correct for machine, review part program for excessive rotary axis commands. Check G-code for the +n axis movement that triggered alarm and verify toolpath simulation shows adequate clearance.

DIY Feasiblehigh confidence

Call a technician if:

·Position feedback errors persist after reference return
·Parameter changes don't resolve interference
·Physical damage to rotary axis or encoder suspected

Prevention

Regularly verify work coordinate offsets
Implement proper workpiece measurement procedures
Use program simulation before running new rotary axis programs
Maintain accurate interference check parameters

Common Mistakes

Ignoring workpiece geometry changes when setting interference parameters
Not performing reference return after power cycling
Modifying software limits without understanding interference check interaction
Running programs without verifying work coordinate system

Related Alarms

513 515 516 500 501

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