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FANUC Alarm SPOT-378 — WARN IWC ID jumpers incorrect

FANUC SPOT-378 (“WARN IWC ID jumpers incorrect”): IWC ID jumpers incorrect The ID jumpers on the IWC card(s) are not set so that the cards can be identified as card #1 and card #2 First check: If there is one card in the system, its ID must be set to 1.

Updated 2026-09-17 · LogrobotLM reference

Description

IWC ID jumpers incorrect The ID jumpers on the IWC card(s) are not set so that the cards can be identified as card #1 and card #2

Remedy

If there is one card in the system, its ID must be set to 1. If there are two cards, one must be set as card 1 and the other as card 2 according to which slots they are in.

Related codes

SPOT-376WARN Could not read setup file …SPOT-377WARN Could not read file …SPOT-379WARN IWC slave busySPOT-380WARN Invalid IWC Firmware Version

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 →