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FANUC Alarm SRVO-265 — SERVO E.STOP circuit abnormal 2

Error
Hardware
emergency stop and dual safety chains
Controllers
R-J3iB / R-30iA
FANUC class
SERVO
Hardware family
FANUC emergency stop, pendant and dual safety chain alarms

FANUC SRVO-265 (“SERVO E.STOP circuit abnormal 2”): FENCE1 status is still ON when FENCE signal is asserted First check: Repair the circuit of FENCE1

Updated 2026-10-22 · LogrobotLM reference

Description

FENCE1 status is still ON when FENCE signal is asserted

Remedy

Repair the circuit of FENCE1

Field diagnosis

Second level of emergency stop unit fault: its internal circuitry is faulty.

What to check

  • Replace the emergency stop unit; while doing so, check the connectors to the servo amplifier and to the operator panel.
  • Note: The code does not clear without a power cycle.

Related codes

SRVO-264SYSTEM E.STOP circuit abnormal 1SRVO-250SERVO SVEMG/MAINON1 abnormalSRVO-263SERVO Chain 2 (SVDISC) abnormalSRVO-266SERVO FENCE1 status abnormalSRVO-267SERVO FENCE2 status abnormal

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 →