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FANUC Alarm HOST-243 — ACD: duplicate IP …

Manufacturer wording — ACD: duplicate IP %s
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC HOST-243 (“ACD: duplicate IP …”): The Address Conflict Detection has detected a duplicate IP address on the network. First check: Change the configured IP address to an IP address not on the network.

Updated 2026-09-17 · LogrobotLM reference

Description

The Address Conflict Detection has detected a duplicate IP address on the network.

Remedy

Change the configured IP address to an IP address not on the network. If using DHCP, consult your network administrator.

Related codes

HOST-241EMAIL: Email send successfulHOST-242SNTP: NTP server unreachableHOST-244Ethernet ThrottleHOST-245Illegal Hostname

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 →