LogrobotLM

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FANUC Alarm LANG-081 — Invalid application header

FANUC LANG-081 (“Invalid application header”): The Ascii Input encountered an error in the application section. First check: Fix the /APPL section of the.LS file.

Updated 2026-09-17 · LogrobotLM reference

Description

The Ascii Input encountered an error in the application section.

Remedy

Fix the /APPL section of the.LS file.

Related codes

LANG-079Invalid sectionLANG-080Invalid filenameLANG-090Buffer is too smallLANG-091Can't print optimize data

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