LogrobotLM

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FANUC Alarm SPOT-357 — WARN Invalid buffer, IWC msg send

FANUC SPOT-357 (“WARN Invalid buffer, IWC msg send”): Invalid buffer, IWC msg send The IWC reported an invalid buffer during a message send operation. First check: Notify Product Development.

Updated 2026-09-17 · LogrobotLM reference

Description

Invalid buffer, IWC msg send The IWC reported an invalid buffer during a message send operation. This may indicate a problem with the board or driver software.

Remedy

Notify Product Development.

Related codes

SPOT-355WARN Invalid IWC function codeSPOT-356WARN Checksum error, IWC msg sendSPOT-358WARN Checksum error, IWC msg recvSPOT-359WARN Invalid buffer, IWC msg recv

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 →