FANUC Alarm LANG-077 — Invalid mnenonic syntax
FANUC LANG-077 (“Invalid mnenonic syntax”): The Ascii Input encountered an error in the mnenonic section. First check: Fix the /MN section of the.LS file.
Updated 2026-09-17 · LogrobotLM reference
Description
The Ascii Input encountered an error in the mnenonic section.
Remedy
Fix the /MN section of the.LS file.
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 →