FANUC Alarm MARL-008 — WARN Error reading data …
Manufacturer wording — WARN Error reading data %s
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC MARL-008 (“WARN Error reading data …”): Error occurred while reading the data which the user entered. First check: This is a warning message.
Updated 2026-09-17 · LogrobotLM reference
Description
Error occurred while reading the data which the user entered.
Remedy
This is a warning message. Try again. If you keep getting this message contact Fanuc Robotics with the number in the error string.
Related codes
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 →