LogrobotLM

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FANUC Alarm HOST-126 — WARN Invalid Ethernet address

FANUC HOST-126 (“WARN Invalid Ethernet address”): The Ethernet address needs to be set. First check: Set the Ethernet address in Configuration Menu.

Updated 2026-08-29 · LogrobotLM reference

Description

The Ethernet address needs to be set.

Remedy · Remède

Set the Ethernet address in Configuration Menu.

Frequently asked · Questions fréquentes

What does FANUC alarm HOST-126 mean?
FANUC HOST-126 (“WARN Invalid Ethernet address”): The Ethernet address needs to be set.
How do you troubleshoot FANUC alarm HOST-126?
Set the Ethernet address in Configuration Menu.

Related codes / Codes liés

HOST-116PROXY: Remote proxy errorHOST-117WARN PROXY: PMON errorHOST-127WARN Ethernet firmware not loadedHOST-128WARN Ethernet hardware not installed

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. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →