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FANUC Alarm HOST-173 — WARN DNS: Server Failure

FANUC HOST-173 (“WARN DNS: Server Failure”): Problem with DNS server. First check: Verify that you DNS server is running.

Updated 2026-09-17 · LogrobotLM reference

Description

Problem with DNS server.

Remedy

Verify that you DNS server is running. Check with your DNS administrator to verify that the server is working properly.

Related codes

HOST-171WARN EXMG: Message TruncatedHOST-172WARN DNS: Host Not FoundHOST-174WARN DNS: Format or Recovery ErrorHOST-175WARN DNS: Server Has No Address

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 →