LogrobotLM

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FANUC Alarm HOST-301 — Not Connected(Tag=%s)

FANUC HOST-301 (“Not Connected(Tag=%s)”): The CNC is not connected. First check: Connect the CNC to the robot controller.

Updated 2026-08-29 · LogrobotLM reference

Description

The CNC is not connected.

Remedy · Remède

Connect the CNC to the robot controller.

Frequently asked · Questions fréquentes

What does FANUC alarm HOST-301 mean?
FANUC HOST-301 (“Not Connected(Tag=%s)”): The CNC is not connected.
How do you troubleshoot FANUC alarm HOST-301?
Connect the CNC to the robot controller.

Related codes / Codes liés

HOST-299SMB: DOS Error %d from PCHOST-300Can't connect to CNC(%s)HOST-302CNC doesn't ConnectedHOST-303Not supported CNC

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 →