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FANUC Alarm SPOT-104 — PAUSE Backup close fault %s-gun 1

FANUC SPOT-104 (“PAUSE Backup close fault %s-gun 1”): The BU Close Detect input was not received within the specified timeout period. First check: Verify the input is assigned correctly; verify the input is being made when the backup gun is closed; or if needed, increase the timeout value (in $spoteqsetup.$bu_cl_to).

Updated 2026-08-29 · LogrobotLM reference

Description

The BU Close Detect input was not received within the specified timeout period.

Remedy · Remède

Verify the input is assigned correctly; verify the input is being made when the backup gun is closed; or if needed, increase the timeout value (in $spoteqsetup.$bu_cl_to).

Frequently asked · Questions fréquentes

What does FANUC alarm SPOT-104 mean?
FANUC SPOT-104 (“PAUSE Backup close fault %s-gun 1”): The BU Close Detect input was not received within the specified timeout period.
How do you troubleshoot FANUC alarm SPOT-104?
Verify the input is assigned correctly; verify the input is being made when the backup gun is closed; or if needed, increase the timeout value (in $spoteqsetup.$bu_cl_to).

Related codes / Codes liés

SPOT-102PAUSE Gun close fault %s-gun 1SPOT-103PAUSE Backup open fault %s-gun 1SPOT-120PAUSE Bad Pressure (EP=%s)-gun 1SPOT-121PAUSE Undefined Pressure (EP=*)-gun 1

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 →