LogrobotLM

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FANUC Alarm SRVO-204 — SYSTEM External(SVEMG abnormal) E-stop

FANUC SRVO-204 (“SYSTEM External(SVEMG abnormal) E-stop”): The external emergency stop push button is pressed and mis-wiring on SVEMG is detected. First check: Power off. Correct the wiring on SVEMG.

Updated 2026-08-29 · LogrobotLM reference

Description

The external emergency stop push button is pressed and mis-wiring on SVEMG is detected.

Remedy · Remède

Power off. Correct the wiring on SVEMG. If using external emergency stop, clear the source of the fault, and press RESET. Refer to the maintenance manual for details.

Frequently asked · Questions fréquentes

What does FANUC alarm SRVO-204 mean?
FANUC SRVO-204 (“SYSTEM External(SVEMG abnormal) E-stop”): The external emergency stop push button is pressed and mis-wiring on SVEMG is detected.
How do you troubleshoot FANUC alarm SRVO-204?
Power off. Correct the wiring on SVEMG. If using external emergency stop, clear the source of the fault, and press RESET. Refer to the maintenance manual for details.

Related codes / Codes liés

SRVO-202SERVO TP E-stop or SVEMG abnormalSRVO-203SVON input(SVEMG abnormal)SRVO-205SYSTEM Fence open(SVEMG abnormal)SRVO-206SYSTEM Deadman switch (SVEMG 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. · 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 →