Mitsubishi L02CPU User Manual page 264

(7) Clearing the file register
The file register contents are held even after the CPU module is powered off or reset. (Not cleared with a latch
clear operation.
*1 The latch range of the file register can be set in the Device tab of the PLC Parameter dialog box.
( Page 83, Section 3.4)
(a) Clearing from a programming tool
Select "Clear all File Registers".
[Online]
(b) Clearing from the display unit
Clear from the display unit. (
(c) Clearing from a program
Clear the file register R0 to R999 using the FMOV instruction.
Ex. Ex.
(8) Deleting a file register file
Open the "Online Data Operation" dialog box.
[Online]
262
*1
) To clear the contents of the file register file, perform any of the following.
[PLC Memory Operation]
Page 196, Section 4.2.2)
[Delete PLC Data...]
[Clear PLC Memory...]