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FANUC Alarm SPOT-358 — WARN Checksum error, IWC msg recv

FANUC SPOT-358 (“WARN Checksum error, IWC msg recv”): Checksum error, IWC msg recv An invalid checksum was computed on a message segment received from the IWC board. First check: Notify Product Development.

Updated 2026-09-17 · LogrobotLM reference

Description

Checksum error, IWC msg recv An invalid checksum was computed on a message segment received from the IWC board. This may indicate a problem with the board or driver software.

Remedy

Notify Product Development.

Related codes

SPOT-356WARN Checksum error, IWC msg sendSPOT-357WARN Invalid buffer, IWC msg sendSPOT-359WARN Invalid buffer, IWC msg recvSPOT-360WARN IWC buffer too small

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 →