Fanuc 0i Error Code 128

Fanuc CNC Minor P/S Alarm

Model: FANUC Series 0i / 0i Mate | Code: 128

Applicable Systems
Series 0i Series 16/18/21 Alpha Beta

Symptoms

The sequence number specified in a macro branch (GOTO/GOTON) was not found.

Possible Causes

  • The branch destination sequence number N does not exist.
  • Typographical error in the sequence number.

Troubleshooting Steps

  1. Step 1: Verify the branch destination sequence number exists.
    Missing sequence number identified.
  2. Step 2: Correct or add the sequence number.
    Macro branch executes to the correct destination.

How to Reset

Fix the branch destination and reset to clear the alarm.

Related Fanuc Fault Codes

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Source: Fanuc 0i/0iMate Alarm Code List, FANUC Corporation

Category: CNC