LogrobotLM

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FANUC Alarm PROG-027 — WARN Invalid task number

FANUC PROG-027 (“WARN Invalid task number”): The task number specified is invalid. First check: Check the task number.

Updated 2026-09-17 · LogrobotLM reference

Description

The task number specified is invalid.

Remedy

Check the task number.

Related codes

PROG-025WARN Cannot execute backwardsPROG-026WARN No more motion historyPROG-029WARN Buffer size is not enoughPROG-030WARN Attribute is not found

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 →