Fanuc 0i Error Code 077

Fanuc CNC Major P/S Alarm

Model: FANUC Series 0i / 0i Mate | Code: 077

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

Symptoms

Subprogram nesting depth exceeds the allowed limit.

Possible Causes

  • Subprogram calls are nested more than the maximum allowed levels.
  • Recursive or deep subprogram call chain.

Troubleshooting Steps

  1. Step 1: Review the subprogram call chain for excessive nesting.
    Deep nesting identified.
  2. Step 2: Reduce the nesting depth to within the limit.
    Subprogram calls execute without nesting error.

How to Reset

Reduce subprogram nesting and reset to clear the alarm.

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

Category: CNC