LogrobotLM

LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free →

FANUC Alarm SRVO-161 — SERVO Fence open or Deadman SW

FANUC SRVO-161 (“SERVO Fence open or Deadman SW”): The teach pendant deadman switch is released or the fence circuit is open. First check: Press teach pendant deadman switch or determine the cause of the fence and then press RESET.

Updated 2026-09-17 · LogrobotLM reference

Description

The teach pendant deadman switch is released or the fence circuit is open.

Remedy

Press teach pendant deadman switch or determine the cause of the fence and then press RESET.

Related codes

SRVO-157SERVO CHGAL alarmSRVO-160SERVO Panel/External E-stopSRVO-162SERVO Deadman/Fence or Panel/External E-stopSRVO-163SYSTEM DSM hardware mismatch

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 →