FANUC Alarm PRIO-231 — EtherNet/IP Adapter Idle
FANUC PRIO-231 (“EtherNet/IP Adapter Idle”): The robot EtherNet/IP Adapter connection is enabled but no remote scanner has connected to it. First check: Configure the remote scanner (eg.
Updated 2026-09-17 · LogrobotLM reference
Description
The robot EtherNet/IP Adapter connection is enabled but no remote scanner has connected to it. Note that it is normal to see this message when the controller first is turned on since the remote scanner (eg. PLC) might not connect to the robot immediately after the robot has been turned on. The PLC will retry the connection again so normally the connection is made shortly after powerup.
Remedy
Configure the remote scanner (eg. PLC) to connect to the robot. Press RESET to clear alarm. An alarm will be reposted if the connection is still idle.
Related codes
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 →