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ABB Error 71021 — Duplicate cross connection with same resultant I/O signals

Error

ABB 71021 (“Duplicate cross connection with same resultant I/O signals”): “Duplicate cross connection with same resultant I/O signals” is an ABB IRC5 event of major severity.

Updated 2026-10-23 · LogrobotLM reference

What it means

“Duplicate cross connection with same resultant I/O signals” is an ABB IRC5 event of major severity.

Related codes

10005Program stopped10007Program started10008Program restarted

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 →