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Drives error Ax no.: 79

KSD EEPROM Communication Error (Control Unit)

Kuka · KR C2 Robot Controller

What does Drives error Ax no.: 79 mean?

A communication error has occurred with the EEPROM in the control unit of the servo drive module for the specified axis (Ax). This suggests an issue with data storage or retrieval within the KSD's control unit.

Common Causes

  • Communication error between the KSD 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

    Check the KSD module for visible damage or loose connections.

  2. 2

    Restart the controller.

  3. 3

    If the error persists after restart, exchange the KSD module.

Browse all codes in this manual (58)
Verified technical data. Last updated: April 2026

Related Faults

-1General Path Replay Error-11Path Not Found-13Empty Path Data
Source: Kuka KR C2 Robot Controller
Open Manual (Page 26)Search more codes in this manual