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ABB Error 20321 — Not-a-Number
Error
ABB 20321 (“Not-a-Number”): “Not-a-Number” is an ABB IRC5 event of major severity.
Updated 2026-10-23 · LogrobotLM reference
What it means
“Not-a-Number” 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 →