LogrobotLM

LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free → · Le diagnostic IA qui lit la sauvegarde de votre robot, sans rien téléverser.

FANUC Alarm SRIO-003 — WARN SERIAL PORT ALREADY OPEN

FANUC SRIO-003 (“WARN SERIAL PORT ALREADY OPEN”): Serial port has already been opened, and it was tried to be opened again. First check: Do not try to open the serial port which has already be opened.

Updated 2026-08-29 · LogrobotLM reference

Description

Serial port has already been opened, and it was tried to be opened again.

Remedy · Remède

Do not try to open the serial port which has already be opened.

Frequently asked · Questions fréquentes

What does FANUC alarm SRIO-003 mean?
FANUC SRIO-003 (“WARN SERIAL PORT ALREADY OPEN”): Serial port has already been opened, and it was tried to be opened again.
How do you troubleshoot FANUC alarm SRIO-003?
Do not try to open the serial port which has already be opened.

Related codes / Codes liés

SRIO-001WARN S. PORT ILLEGAL FUNCTION CODESRIO-002WARN SERIAL PORT NOT OPENSRIO-004WARN SERIAL PORT NOT INITIALIZESRIO-005WARN SERIAL PORT DSR OFF

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 →