LogrobotLM

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FANUC Alarm SRVO-409 — DCS SSO Servo Disconnect %x,%x

FANUC SRVO-409 (“DCS SSO Servo Disconnect %x,%x”): SSO[4:C_SVOFF] is OFF First check: Check Safe I/O connect setting.

Updated 2026-08-29 · LogrobotLM reference

Description

SSO[4:C_SVOFF] is OFF

Remedy · Remède

Check Safe I/O connect setting.

Frequently asked · Questions fréquentes

What does FANUC alarm SRVO-409 mean?
FANUC SRVO-409 (“DCS SSO Servo Disconnect %x,%x”): SSO[4:C_SVOFF] is OFF
How do you troubleshoot FANUC alarm SRVO-409?
Check Safe I/O connect setting.

Related codes / Codes liés

SRVO-407DCS SSO Fence Open %x,%xSRVO-408DCS SSO Ext Emergency Stop %x,%xSRVO-410DCS SSO NTED input %x,%xSRVO-411DCS Mode disconnect %x,%x

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 →