KUKA Error KSS13012 — EtherCAT bus SYS-X44 / CCU
InfoKUKA KSS13012 (“EtherCAT bus SYS-X44 / CCU”): “<SYS-X44> Error during ECat stack initialization (no network response)”: the EtherCAT stack of the X44 extension bus does not initialize — no slave responds. Likely part: CCU (Cabinet Control Unit).
Updated 2026-09-09 · LogrobotLM reference
Cause
“<SYS-X44> Error during ECat stack initialization (no network response)”: the EtherCAT stack of the X44 extension bus does not initialize — no slave responds. Causes: X44 cable unplugged or defective, first coupler not powered, or WorkVisual configuration unrelated to the hardware actually connected.
Part to check / replace
KUKA KSS13012 points to the hardware below — start here before ordering.
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Related codes
Same hardware involved
Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →