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 2026-09-17 · LogrobotLM reference
Description
The I/O number entered is not for the selected CNC.
Remedy
Enter the proper I/O number for the selected CNC.
Related codes
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 →