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-306 — Input I/O number for CNC No.

FANUC HOST-306 (“Input I/O number for CNC No.”): The I/O number entered is not for the selected CNC. First check: Enter the proper I/O number for the selected CNC.

Updated 2026-08-29 · LogrobotLM reference

Description

The I/O number entered is not for the selected CNC.

Remedy · Remède

Enter the proper I/O number for the selected CNC.

Frequently asked · Questions fréquentes

What does FANUC alarm HOST-306 mean?
FANUC HOST-306 (“Input I/O number for CNC No.”): The I/O number entered is not for the selected CNC.
How do you troubleshoot FANUC alarm HOST-306?
Enter the proper I/O number for the selected CNC.

Related codes / Codes liés

HOST-304Cycle power to change CNC No.HOST-305Start Comm. with CNC No.%dHOST-307CNC No. is duplicatedHOST-308Add CNC to be connected

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 →