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FANUC Alarm HOST-159 — WARN FTP: login failed

FANUC HOST-159 (“WARN FTP: login failed”): The Comm Tag does not have a valid username and password. First check: Enter a valid username and password for the Comm Tag.

Updated 2026-08-29 · LogrobotLM reference

Description

The Comm Tag does not have a valid username and password.

Remedy · Remède

Enter a valid username and password for the Comm Tag.

Frequently asked · Questions fréquentes

What does FANUC alarm HOST-159 mean?
FANUC HOST-159 (“WARN FTP: login failed”): The Comm Tag does not have a valid username and password.
How do you troubleshoot FANUC alarm HOST-159?
Enter a valid username and password for the Comm Tag.

Related codes / Codes liés

HOST-151WARN No more Ethernet buffers.HOST-158WARN FTP: no connection availableHOST-160WARN FTP: tag dismount request ignoredHOST-161WARN FTP: need remote host name

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 →