4470

SSI transformation fault or not finished

Beckhoff · TwinCAT 2 NC

What does 4470 mean?

The Synchronous Serial Interface (SSI) transformation performed by the FOX 50 module was either faulty for several NC cycles or failed to complete. This indicates a problem in reading or converting data from SSI encoders, leading to inaccurate or missing position feedback and ultimately affecting axis control.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Inspect the FOX 50 module itself for any diagnostic LEDs or fault indicators.

  2. 4

    If connectivity and configuration are correct, consider replacing the FOX 50 module.

Source: Beckhoff TwinCAT 2 NC
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