What causes FANUC alarm 132?

Servo amplifier internal fault — check amplifier fault LED and DGN 200 sub-code. Axis encoder cable damaged or connector loose causing position feedback loss. Servo motor winding fault or bearing failure. FSSB communication fault between CNC and amplifier. Axis mechanical binding or collision causing overcurrent.

How do I fix FANUC alarm 132?

1. Check DGN 200 and 204 on the Fanuc diagnosis screen for the specific servo sub-alarm. 2. Check the servo amplifier for fault LEDs and displayed fault codes. 3. Inspect encoder cable and connectors for the affected axis. 4. Manually move the axis with servo off to check for mechanical binding. 5. Power cycle the machine completely to reset the servo system.

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FANUC Controller

Servo/Axis · Advanced · 30-60 minutes

Alarm 132

Fanuc Alarm 132 - General Servo Alarm

Alarm 132 occurs when the PMC ladder program attempts to trigger an external alarm message using a function like EXIN or external alarm interface, but the alarm number specified does not exist in the CNC's message file or external alarm message table. This is a programming mismatch between the PMC ladder logic and the registered alarm message definitions in parameters or message files.

FANUCServo/AxisAdvanced30-60 minutes

132

Fanuc Alarm 132 - General Servo Alarm

Servo System Alarm

Root Cause Summary

Alarm 132 occurs when the PMC ladder program attempts to trigger an external alarm message using a function like EXIN or external alarm interface, but the alarm number specified does not exist in the CNC's message file or external alarm message table. This is a programming mismatch between the PMC ladder logic and the registered alarm message definitions in parameters or message files.

Safety

Servo disabled

Causes and Fixes

1
Access PMC ladder via SYSTEM > PMC > LADDER or PMCMNT and identify which EXIN functional instruction or G address signal is triggering. Note the external alarm number being referenced.
2
Navigate to SYSTEM > PMC > MESSAGE > EXTERNAL OPERATOR'S MESSAGE to verify if the alarm number identified in Step 1 exists in the external message table. Check both message number and corresponding text.
3
If message is missing, add the alarm number and message text to the external message file using FANUC Ladder III or directly edit the message data via the control panel. Ensure alarm number matches exactly what PMC is calling.
Backup PMC ladder and parameters before making changes using SYSTEM > PMC > FILE or BACKUP function
4
After adding message, perform PMC reset or full CNC power cycle to reload message table. Verify alarm clears and message displays correctly when triggered.

DIY Feasiblehigh confidence

Call a technician if:

·PMC ladder modifications required
·Parameter corruption with no backup available
·Software version downgrade needed

Prevention

Always register external alarm messages in parameters 6301-6320 before using in programs
Maintain current parameter backups
Document custom alarm message assignments
Test macro programs thoroughly after parameter changes

Common Mistakes

Assuming alarm numbers are automatically registered
Not backing up parameters before modifications
Using alarm numbers outside the 3000-3999 external range
Copying programs between machines without checking alarm message compatibility

Related Alarms

131 133 134 PS0010

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