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FANUC Alarm HOST-237 — WARN FTP: server tags not available

FANUC HOST-237 (“WARN FTP: server tags not available”): The system was unable to start the FTP servers because no free server tags were found. First check: Start FTP servers manually.

Updated 2026-09-17 · LogrobotLM reference

Description

The system was unable to start the FTP servers because no free server tags were found.

Remedy

Start FTP servers manually.

Related codes

HOST-235WARN DisabledHOST-236WARN FTP: servers not auto-startedHOST-239WARN KCL option not loadedHOST-240EMAIL: Email send failed

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 →