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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

COF

CANopen communication detected fault

Schindler · Altivar 312 Drive

What does COF mean?

This fault indicates a detected communication issue on the CANopen bus. It implies a problem with the CANopen network connection or the CANopen option card itself.

Common Causes

  • Interruption in communication on the CANopen bus.
  • Fault with the CANopen communication card.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the physical connections of the CANopen communication bus.

  2. 2

    Refer to the specific CANopen option card manual for detailed troubleshooting.

Browse all codes in this manual (32)
Verified technical data. Last updated: April 2026

Related Faults

A-17Alarm buttonCFFINCORRECT CONFIG.CFIINVALID CONFIG
Source: Schindler Altivar 312 Drive
Open Manual (Page 91)Search more codes in this manual