FANUC Alarm ARC-188 — External emergency input(E:…)

Manufacturer wording — External emergency input(E:%d)
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC ARC-188 (“External emergency input(E:…)”): An ESTOP signal was input from an external source. First check: Turn off controller power, remove the cause for the error, reset the ESTOP, then turn on the controller again.

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 →