26115

Unknown status flag received, KPP/KSP (axis)

Kuka · KR C4 extended

What does 26115 mean?

The EtherCAT master has received an unknown status flag from the KPP or KSP module for a specific axis, indicating a software error within the EtherCAT master. This suggests an unexpected communication state.

Common Causes

  • Software error in the EtherCAT master.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify KUKA system software version and KPP/KSP firmware compatibility for the affected axis.

  2. 2

    Inspect EtherCAT communication cables and connectors for the affected axis for damage, proper routing, and secure connections.

  3. 3

    Check diagnostic LEDs on the KPP/KSP axis module and the EtherCAT master in the KR C4 controller for error indications.

  4. 4

    Verify EtherCAT device configuration and axis parameters within the KUKA HMI against the physical setup and documentation.

  5. 5

    Perform a controlled cold start (power cycle) of the KR C4 controller to reset communication states.

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Verified technical data. Last updated: March 2026

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