Fanuc 0i Error Code 087

Fanuc CNC Minor P/S Alarm

Model: FANUC Series 0i / 0i Mate | Code: 087

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

Symptoms

A buffer overflow occurred during tape or data reading.

Possible Causes

  • The input data rate exceeds the CNC buffer processing speed.
  • Communication timing mismatch.

Troubleshooting Steps

  1. Step 1: Reduce the data input rate or check for communication timing issues.
    Input rate adjusted.
  2. Step 2: Retry the data input at a compatible rate.
    Data input completes without overflow.

How to Reset

Fix the buffer overflow condition 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

Published: 2026-10-09