ABB Error 20287 — Non-unique I/O signal for system input

ABB 20287 (“Non-unique I/O signal for system input”): “Non-unique I/O signal for system input” is an ABB IRC5 event of major severity.

Updated 2026-10-23 · LogrobotLM reference

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 →