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FANUC Alarm HOST-307 — CNC No. is duplicated

FANUC HOST-307 (“CNC No. is duplicated”): You entered a duplicate CNC no. First check: Enter a CNC no.

Updated 2026-08-29 · LogrobotLM reference

Description

You entered a duplicate CNC no.

Remedy · Remède

Enter a CNC no. which is not already in use.

Frequently asked · Questions fréquentes

What does FANUC alarm HOST-307 mean?
FANUC HOST-307 (“CNC No. is duplicated”): You entered a duplicate CNC no.
How do you troubleshoot FANUC alarm HOST-307?
Enter a CNC no. which is not already in use.

Related codes / Codes liés

HOST-305Start Comm. with CNC No.%dHOST-306Input I/O number for CNC No.HOST-308Add CNC to be connectedHOST-309Please set CNC No.%d

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 →