FANUC Alarm SRVO-408 — DCS SSO Ext Emergency Stop …,…
Manufacturer wording — DCS SSO Ext Emergency Stop %x,%x
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC SRVO-408 (“DCS SSO Ext Emergency Stop …,…”): SSO[3:C_EXEMG] is OFF First check: Check Safe I/O connect setting.
Updated 2026-09-17 · LogrobotLM reference
Description
SSO[3:C_EXEMG] is OFF
Remedy
Check Safe I/O connect setting.
Related codes
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. How this reference is built →