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 JOG-027 — WARN Reverse direction from J4=0

FANUC JOG-027 (“WARN Reverse direction from J4=0”): This direction is reverse direction from J4 = 0. First check: Press opposite jog key .

Updated 2026-08-29 · LogrobotLM reference

Description

This direction is reverse direction from J4 = 0.

Remedy · Remède

Press opposite jog key .

Frequently asked · Questions fréquentes

What does FANUC alarm JOG-027 mean?
FANUC JOG-027 (“WARN Reverse direction from J4=0”): This direction is reverse direction from J4 = 0.
How do you troubleshoot FANUC alarm JOG-027?
Press opposite jog key .

Related codes / Codes liés

JOG-025WARN J4 is not zeroJOG-026WARN J4 is zeroJOG-028WARN OFIX TCP config limitJOG-029WARN OFIX jog error

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 →