Drives error PMx no.: 79

KPS EEPROM Communication Error (Control Unit)

Kuka · KR C2 Robot Controller

What does Drives error PMx no.: 79 mean?

A communication error has occurred with the EEPROM in the control unit of the KPS module (PMx). This suggests an issue with data storage or retrieval within the KPS control unit.

Common Causes

  • Communication error between the KPS control unit and its EEPROM.
  • Faulty EEPROM chip on the control unit.
  • Intermittent connection issues to the EEPROM.
  • EEPROM data corruption.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Restart the KPS module.

  2. 2

    If the error persists, exchange the KPS module.

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Verified technical data. Last updated: March 2026

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