FANUC Alarm PRIO-081 — STOP I/O is not initialized
FANUC PRIO-081 (“STOP I/O is not initialized”): This indicates that an severe error has occured during I/O initialization at controller powerup. First check: Check other error messages displayed on the TP alarm screen.
Updated 2026-08-29 · LogrobotLM reference
Description
This indicates that an severe error has occured during I/O initialization at controller powerup. Other messages in the log will indicate the specific problems.
Remedy · Remède
Check other error messages displayed on the TP alarm screen. The conditions indicated by these messages need to be corrected and the controller powered down and up before the robot can be used.
Frequently asked · Questions fréquentes
- What does FANUC alarm PRIO-081 mean?
- FANUC PRIO-081 (“STOP I/O is not initialized”): This indicates that an severe error has occured during I/O initialization at controller powerup. Other messages in the log will indicate the specific problems.
- How do you troubleshoot FANUC alarm PRIO-081?
- Check other error messages displayed on the TP alarm screen. The conditions indicated by these messages need to be corrected and the controller powered down and up before the robot can be used.
Related codes / Codes liés
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 →