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 → · Le diagnostic IA qui lit la sauvegarde de votre robot, sans rien téléverser.

FANUC Alarm HOST-239 — WARN KCL option not loaded

FANUC HOST-239 (“WARN KCL option not loaded”): A web page tried to issue a KCL command, but KCL is not loaded on the robot controller. First check: Load the KCL option on the robot controller at Controlled Start.

Updated 2026-08-29 · LogrobotLM reference

Description

A web page tried to issue a KCL command, but KCL is not loaded on the robot controller.

Remedy · Remède

Load the KCL option on the robot controller at Controlled Start.

Frequently asked · Questions fréquentes

What does FANUC alarm HOST-239 mean?
FANUC HOST-239 (“WARN KCL option not loaded”): A web page tried to issue a KCL command, but KCL is not loaded on the robot controller.
How do you troubleshoot FANUC alarm HOST-239?
Load the KCL option on the robot controller at Controlled Start.

Related codes / Codes liés

HOST-236WARN FTP: servers not auto-startedHOST-237WARN FTP: server tags not availableHOST-240EMAIL: Email send failedHOST-241EMAIL: Email send successful

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 →