231-A002

Cancelation of brake-line-test call monitoring

Heidenhain · TNC CNC Controllers

What does 231-A002 mean?

This error indicates the cancellation of the brake-line-test call monitoring. The most common cause is that guard doors were open during the brake control test or brake line test, compromising safety.

Common Causes

  • Guard door(s) were open during the brake control test or brake line test.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure all guard doors are securely closed and locked before initiating and throughout the brake control test or brake line test.

  2. 2

    Verify the functionality of guard door interlocks and sensors.

  3. 3

    Check the wiring and connections related to the guard door safety circuit.

Browse all codes in this manual (47)
Verified technical data. Last updated: March 2026

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Source: Heidenhain TNC CNC Controllers