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 SVGN-056 — STOP $GUNNUN is invalid number.

FANUC SVGN-056 (“STOP $GUNNUN is invalid number.”): Specified number is not valid for $GUNNUM. First check: $GUNNUM can be set only 1 or 2 which is corresponding to GUN1 or GUN2

Updated 2026-08-29 · LogrobotLM reference

Description

Specified number is not valid for $GUNNUM.

Remedy · Remède

$GUNNUM can be set only 1 or 2 which is corresponding to GUN1 or GUN2

Frequently asked · Questions fréquentes

What does FANUC alarm SVGN-056 mean?
FANUC SVGN-056 (“STOP $GUNNUN is invalid number.”): Specified number is not valid for $GUNNUM.
How do you troubleshoot FANUC alarm SVGN-056?
$GUNNUM can be set only 1 or 2 which is corresponding to GUN1 or GUN2

Related codes / Codes liés

SVGN-054STOP $EQNUM is invalid number.SVGN-055STOP $EQNUM is not Servo Gun.SVGN-057STOP Tip Wear Down Cal. is IMCOMP.SVGN-058STOP UT or UF is different.

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 →