FANUC codes
AxisMD

axismd.ai

FANUC Controller

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

Alarm 5096

Fanuc Alarm 5096 - MISMATCH WAITING M-CODE

Fanuc alarm 5096 occurs in multi-path (multi-channel) systems when the waiting M-code specified in parameter 3008 does not match between synchronized paths, or when one path executes a waiting M-code while the other path does not have a corresponding code. This alarm prevents unsynchronized execution when paths are supposed to wait for each other at designated M-codes.

FANUCProgram/G-codeIntermediate30-60 minutes

5096

Fanuc Alarm 5096 - MISMATCH WAITING M-CODE

SYSTEM ALARM 5096

Fanuc alarm 5096: SYSTEM ALARM 5096. This alarm indicates a fault condition detected by the Fanuc control. Refer to the alarm number and name to identify the specific system or function involved.

Root Cause Summary

Fanuc alarm 5096 occurs in multi-path (multi-channel) systems when the waiting M-code specified in parameter 3008 does not match between synchronized paths, or when one path executes a waiting M-code while the other path does not have a corresponding code. This alarm prevents unsynchronized execution when paths are supposed to wait for each other at designated M-codes.

Causes and Fixes

  1. 1

    Check parameter 3008 on both paths (SYSTEM > PARAM > search 3008). Verify which M-codes are designated as waiting M-codes for multi-path synchronization (typically M codes like M200-M299 range).

  2. 2

    Review the NC programs running on both paths at the point of alarm. Verify both paths have identical waiting M-codes at synchronization points (e.g., both should have M200, not M200 on path 1 and M201 on path 2).

  3. 3

    Check DIAGNOSIS screen > multi-path status (exact screen varies by series, typically SYSTEM > DIAGNOSIS > Path) to see which path issued which M-code and where the mismatch occurred.

  4. 4

    Correct the NC program so both paths execute identical waiting M-codes at synchronization points. Ensure proper program flow logic so both paths reach the waiting M-code simultaneously.

    Do not mix different waiting M-codes at intended synchronization points between paths.

DIY Feasiblehigh confidence

Call a technician if:

  • ·Hardware communication failures persist after cable checks
  • ·Parameter changes don't resolve synchronization issues
  • ·Multiple related alarms occur simultaneously

Prevention

  • Always test M-code synchronization in single block mode during program development
  • Document all waiting M-code pairs in program headers
  • Regular backup of synchronization parameters
  • Use consistent M-code numbering scheme across all multi-path programs

Common Mistakes

  • Forgetting to include release M-codes in secondary path programs
  • Using same M-code numbers for different synchronization points
  • Modifying programs without updating both paths simultaneously
  • Setting timeout parameters too low for complex operations

Related Alarms

50955097509020102011

Seeing Multiple Alarms?

Seeing another alarm with this one? Enter the code.

Get machine-aware diagnosis

AxisMD logs alarms against your actual machines, tracks patterns, and gives AI context your manual doesn't have.

Start free

Was this guide helpful?

Always verify with your machine manual or a certified technician before performing service procedures.