LogrobotLM

LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free →

FANUC Alarm LANG-079 — Invalid section

FANUC LANG-079 (“Invalid section”): The Ascii Input encountered an invalid section in the program. First check: Fix the invalid section in the.LS file.

Updated 2026-09-17 · LogrobotLM reference

Description

The Ascii Input encountered an invalid section in the program.

Remedy

Fix the invalid section in the.LS file.

Related codes

LANG-077Invalid mnenonic syntaxLANG-078Invalid position syntaxLANG-080Invalid filenameLANG-081Invalid application header

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 →