26043

Unknown status flag received, KPP/KSP (axis)

Kuka · KR C4 Controller

What does 26043 mean?

This fault signifies a software error within the EtherCat master, resulting in the reception of an unknown status flag from a KPP or KSP drive. This indicates a low-level protocol issue that the system cannot interpret, potentially leading to unpredictable behavior.

Common Causes

  • Software error in the EtherCat master component.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the KUKA KR C4 system software and EtherCAT master firmware versions are up-to-date and compatible with the connected KPP/KSP drives.

  2. 2

    Inspect all EtherCAT communication cables between the KR C4 controller and the KPP/KSP drives for physical damage, proper routing, and secure connections.

  3. 3

    Check diagnostic LEDs on the affected KPP/KSP drive(s) for any error indicators and verify their installed firmware version.

  4. 4

    Verify the EtherCAT device configuration and axis parameters within the KR C4 controller for consistency with the installed KPP/KSP drives.

Browse all codes in this manual (21)
Verified technical data. Last updated: March 2026

Related Faults

26130Intermediate circuit charging failed, KPP/KSP (axis)26042Communication error, KPP/KSP (axis)26106Overcurrent, KPP/KSP (axis)
Source: Kuka KR C4 Controller
Open Manual (Page 158)Search more codes in this manual