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FANUC Alarm SYST-220 — Sync Time-out error

FANUC SYST-220 (“Sync Time-out error”): The process synchronization condition was not satisfied within the specified time-out limit. First check: 1. Check the program logic (seq_id inconsistency, etc.) 2.

Updated 2026-09-17 · LogrobotLM reference

Description

The process synchronization condition was not satisfied within the specified time-out limit.

Remedy

1. Check the program logic (seq_id inconsistency, etc.) 2. Use a longer time-out limit (in the sync schedule).

Related codes

SYST-218DCS Unavailable robot model G:… HexSYST-219Need to verify DCS paramSYST-221Sync Schedule mismatchSYST-222Image backup succeeded

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 →