LogrobotLM

LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free →

FANUC Alarm HOST-109 — WARN Host name not found

FANUC HOST-109 (“WARN Host name not found”): Host Name needs to be set. First check: Set Host Name and Internet Address in the Host Comm TCP/IP Protocol Setup Menu.

Updated 2026-09-17 · LogrobotLM reference

Description

Host Name needs to be set.

Remedy

Set Host Name and Internet Address in the Host Comm TCP/IP Protocol Setup Menu.

Related codes

HOST-107WARN $SERVENT entry not foundHOST-108WARN Internet address not foundHOST-110WARN Node not foundHOST-111WARN Cycle power to use Ethernet

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 →