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FANUC Alarm SPOT-381 — IWC(DG) system error

Manufacturer wording — IWC(DG) system error(%d)
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC SPOT-381 (“IWC(DG) system error”): A communication problem with the timer board has occurred. First check: Write down the number of the error and contact a Service Representative:

Updated 2026-09-17 · LogrobotLM reference

Description

A communication problem with the timer board has occurred.

Remedy

Write down the number of the error and contact a Service Representative:

Related codes

SPOT-379WARN IWC slave busySPOT-380WARN Invalid IWC Firmware VersionSPOT-382PAUSE IWC(DG) illegal stepper numberSPOT-384IWC(DG) leak input

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 →