FANUC Alarm FRCE-427 — Search reverse SW invalid (F:…)

Manufacturer wording — Search reverse SW invalid (F:%d^1)
The manual prints placeholders; your controller fills them in with the real group, axis or number.

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

Updated 2026-09-17 · LogrobotLM reference

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 →