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FANUC Alarm TAST-003 — STOP TAST IO initialization failed

FANUC TAST-003 (“STOP TAST IO initialization failed”): An analog port number error has occured First check: Check a connection of process IO board

Updated 2026-08-29 · LogrobotLM reference

Description

An analog port number error has occured

Remedy · Remède

Check a connection of process IO board

Frequently asked · Questions fréquentes

What does FANUC alarm TAST-003 mean?
FANUC TAST-003 (“STOP TAST IO initialization failed”): An analog port number error has occured
How do you troubleshoot FANUC alarm TAST-003?
Check a connection of process IO board

Related codes / Codes liés

TAST-001WARN TAST global vars failureTAST-002STOP TAST error IO allocationTAST-004STOP TAST IO start failedTAST-005WARN TAST time tick missing

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 →