4223

No enable for controller and/or feed (Master axis)

Beckhoff · TwinCAT 2 NC

What does 4223 mean?

The necessary enable signals for the master axis, such as the controller enable or direction-dependent feed enables (via the PlcToNc interface), are not active. Without these enables, the axis controller cannot operate, preventing any motion or positioning tasks from executing. This is a critical safety interlock.

Complete Troubleshooting Guide

  1. 1

    Check the status of the controller enable signal for the master axis.

  2. 2

    Verify that the relevant direction-dependent feed enable signals are active via the `PlcToNc` interface.

  3. 3

    Troubleshoot any external safety circuits, interlocks, or PLC logic that might be holding the enables inactive.

  4. 4

    Ensure all safety conditions are met, such as guard doors closed or emergency stops reset, that could affect enables.