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 → · Le diagnostic IA qui lit la sauvegarde de votre robot, sans rien téléverser.

FANUC Alarm SYST-221 — Sync Schedule mismatch

FANUC SYST-221 (“Sync Schedule mismatch”): The sync schedule does not match between robots. First check: 1. Make sure same schedule number is used in the program between robots.

Updated 2026-08-29 · LogrobotLM reference

Description

The sync schedule does not match between robots.

Remedy · Remède

1. Make sure same schedule number is used in the program between robots. 2. Make sure the schedule content (robot mask, etc.) is the same between robots.

Frequently asked · Questions fréquentes

What does FANUC alarm SYST-221 mean?
FANUC SYST-221 (“Sync Schedule mismatch”): The sync schedule does not match between robots.
How do you troubleshoot FANUC alarm SYST-221?
1. Make sure same schedule number is used in the program between robots. 2. Make sure the schedule content (robot mask, etc.) is the same between robots.

Related codes / Codes liés

SYST-219Need to verify DCS param (%d)SYST-220Sync Time-out errorSYST-222Image backup succeededSYST-223Image backup failed(0x%x)

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 →