Mitsubishi Electric 600M Series Error PR0491: No FLD operation

CNC milling machine · taken from the manufacturer’s manual, pages cited

Error codePR0491

No FLD operation occurs when an FLD (floppy disk) operation was attempted without any such specification being set. The manual's first action is: “Check the specifications.”

Model
Mitsubishi Electric 600M Series
Display shows
No FLD operation (PR0491)
Type
Error code
Source
Manual p. 487

What PR0491 means

No FLD operation p. 487

Common causes

  • FLD operation was attempted even though there are no FLD operation specifications. p. 487

What to do

  1. Check the specifications. p. 487

Before you service the product, read the safety instructions in the manual p. 4.

If PR0491 is still not resolved

  • contact service / dealer p. 5
    “Do not change the fixed cycle program without prior consent from the machine manufacturer.”
  • contact service / dealer p. 5
    “Do not turn OFF the NC a”
Open the manual at page 487 All 600M Series error codes Manual details & download

This page summarises what the manufacturer’s manual says about PR0491; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Mitsubishi Electric. Found a mistake? Report an error.