LogrobotLM

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FANUC Alarm PRIO-358 — EtherNet/IP FwdOpen Fail (0x%x)

FANUC PRIO-358 (“EtherNet/IP FwdOpen Fail (0x%x)”): The robot EtherNet/IP scanner either did not receive a ForwardOpen Reply message from the remote adapter, or the robot scanner received a ForwardOpen Reply message from the remote adapter indicating a failure to establish an I/O connection. First check: Verify the scanner settings in the robot's Scanner Configuration screen are correct--review the manual of the remote adapter device for the correct settings.

Updated 2026-08-29 · LogrobotLM reference

Description

The robot EtherNet/IP scanner either did not receive a ForwardOpen Reply message from the remote adapter, or the robot scanner received a ForwardOpen Reply message from the remote adapter indicating a failure to establish an I/O connection.

Remedy · Remède

Verify the scanner settings in the robot's Scanner Configuration screen are correct--review the manual of the remote adapter device for the correct settings. Verify that the remote adapter does not currently have a duplicate explicit owner connection (another scanner device already connected to the same assembly instances). Check the remote adapter device and verify that EtherNet/IP is enabled, and that the device is accessible on the network. Take note of the hexadecimal code in the robot alarm text and lookup the error in the robot scanner manual. Press RESET to restart the robot scanner connection.

Frequently asked · Questions fréquentes

What does FANUC alarm PRIO-358 mean?
FANUC PRIO-358 (“EtherNet/IP FwdOpen Fail (0x%x)”): The robot EtherNet/IP scanner either did not receive a ForwardOpen Reply message from the remote adapter, or the robot scanner received a ForwardOpen Reply message from the remote adapter indicating a failure to establish an I/O connection.
How do you troubleshoot FANUC alarm PRIO-358?
Verify the scanner settings in the robot's Scanner Configuration screen are correct--review the manual of the remote adapter device for the correct settings. Verify that the remote adapter does not currently have a duplicate explicit owner connection (another scanner device already connected to the same assembly…

Related codes / Codes liés

PRIO-356EtherNet/IP List Serv FailedPRIO-357EtherNet/IP Reg Sess FailedPRIO-359EtherNet/IP I/O Timeout ErrorPRIO-360EtherNet/IP Adp Not in Run Mode

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 →