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ABB Error 134004 — Invalid client
Error
ABB 134004 (“Invalid client”): “Invalid client” is an ABB IRC5 event of major severity.
Updated 2026-10-23 · LogrobotLM reference
What it means
“Invalid client” is an ABB IRC5 event of major severity.
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 →