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 PRIO-091 — Op panel comm error(ch:%d) %x, %x (hex)

FANUC PRIO-091 (“Op panel comm error(ch:%d) %x, %x (hex)”): Indicates that an error has been detected in communication between the MAIN PCB and Panel PCB. First check: Check the cabling between the MAIN PCB and Panel PCB.

Updated 2026-08-29 · LogrobotLM reference

Description

Indicates that an error has been detected in communication between the MAIN PCB and Panel PCB.

Remedy · Remède

Check the cabling between the MAIN PCB and Panel PCB.

Frequently asked · Questions fréquentes

What does FANUC alarm PRIO-091 mean?
FANUC PRIO-091 (“Op panel comm error(ch:%d) %x, %x (hex)”): Indicates that an error has been detected in communication between the MAIN PCB and Panel PCB.
How do you troubleshoot FANUC alarm PRIO-091?
Check the cabling between the MAIN PCB and Panel PCB.

Related codes / Codes liés

PRIO-089STOP PMC is not supported on this hardwarePRIO-090WARN SNPX communication errorPRIO-092Force sensor comm error %x, %x (hex)PRIO-093Fuse blown Rack:%d Slot:%d

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 →