FANUC Alarm BBOX-026 — Invalid error output DO
FANUC BBOX-026 (“Invalid error output DO”): Bump Limit error output is not configured correctly. First check: Configure the Bump Error output to a valid digital output.
Updated 2026-09-17 · LogrobotLM reference
Description
Bump Limit error output is not configured correctly.
Remedy
Configure the Bump Error output to a valid digital output.
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 →