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FANUC Alarm FRCE-427 — Search reverse SW invalid (F:%d^1)

FANUC FRCE-427 (“Search reverse SW invalid (F:%d^1)”): The value of Reverse switch is wrong. First check: Set the 'reverse switch' ON.

Updated 2026-08-29 · LogrobotLM reference

Description

The value of Reverse switch is wrong.

Remedy · Remède

Set the 'reverse switch' ON.

Frequently asked · Questions fréquentes

What does FANUC alarm FRCE-427 mean?
FANUC FRCE-427 (“Search reverse SW invalid (F:%d^1)”): The value of Reverse switch is wrong.
How do you troubleshoot FANUC alarm FRCE-427?
Set the 'reverse switch' ON.

Related codes / Codes liés

FRCE-425Search range param. error (F:%d^1)FRCE-426Search velocity Calc. error (F:%d^1)FRCE-428Search velocity MAX error (F:%d^1)FRCE-444Illegal user frame(B/D) (F:%d^1)

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 →