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 OPTN-021 — Check orderfil.dat fails: …

Manufacturer wording — Check orderfil.dat fails: %s
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC OPTN-021 (“Check orderfil.dat fails: …”): One or more lines in orderfil.dat have Order Numbers for options that can not work for this ApplicationTool. First check: Remove or correct the line that contains the specified Order Number.

Updated 2026-09-17 · LogrobotLM reference

Description

One or more lines in orderfil.dat have Order Numbers for options that can not work for this ApplicationTool.

Remedy

Remove or correct the line that contains the specified Order Number.

Related codes

OPTN-019WARN Versions mistmatchedOPTN-020Too many … referencesOPTN-022Demo option … expires in … daysOPTN-023Max number of arms is exceeded.

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 →