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FANUC Alarm HOST-191 — WARN Invalid device type

FANUC HOST-191 (“WARN Invalid device type”): invalid port/insufficient memory First check: Verify that a correct port number is specified

Updated 2026-08-29 · LogrobotLM reference

Description

invalid port/insufficient memory

Remedy · Remède

Verify that a correct port number is specified

Frequently asked · Questions fréquentes

What does FANUC alarm HOST-191 mean?
FANUC HOST-191 (“WARN Invalid device type”): invalid port/insufficient memory
How do you troubleshoot FANUC alarm HOST-191?
Verify that a correct port number is specified

Related codes / Codes liés

HOST-189WARN Invalid port numberHOST-190WARN Invalid baud rateHOST-192WARN PPP channel already initializedHOST-193WARN TLNT:Login to %s

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 →