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FANUC Alarm SPOT-352 — WARN Invalid IWC index

FANUC SPOT-352 (“WARN Invalid IWC index”): Invalid IWC index The specified IWC board is not installed. First check: This is a system programming error.

Updated 2026-09-17 · LogrobotLM reference

Description

Invalid IWC index The specified IWC board is not installed.

Remedy

This is a system programming error.

Related codes

SPOT-350WARN IWC board not foundSPOT-351WARN IWC driver not runningSPOT-353WARN IWC message in progressSPOT-354WARN Invalid IWC msg buffers

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 →