Yokogawa Removable Chassis DX1000N - Manual (Page 12)

12
IM 04L41B01-03E
Storage Method for Constantly Retaining the Most Recent Data Files in the CF
Card (Media FIFO)
When saving the data files automatically, you can save the data so that the most recent
data files are constantly retained in the CF card. This method allow you to use the DX
continuously without having to replace the CF card.
Operation
File 1 File 2 File 3 File 4 Deleted Saved
Update date
Medium
Old New
If not enough free space is available when saving a new data file to the CF card, files are
deleted in order from the oldest data update date/time to save the new file. This operation
is referred to as FIFO (First In First Out).
• The FIFO operation is carried out only when saving the following files automatically.
It is not carried out when saving files to the save destination directory using another
method.
Display data files, event data files, report data files, manual sample data files, and snapshot
files
• Files that are deleted
All the files in the save destination directory are applicable to be deleted. However, the
following files are excluded.
Hidden files, read-only files, files in the subdirectory within the save destination directory
• The most recent 1000 files are retained. If the number of files in the save destination
directory exceeds 1000, the number of files is held at 1000 by deleting old files even
if there is enough free space. If there are more than 1000 files already in the save
destination directory, one or more files are always deleted before saving the new file.
Setup Screen
Press MENU (switch to the setting mode), hold down the FUNC key for 3 s (switch
to the basic setting mode), and select Environment > Security, Media save
Setup Items
Save > Auto save
Select
On.
Save > Media FIFO
Select
On.
Section 6.2, “Setting the Method for Saving the Data” in the user’s manual
Operation using communication commands: Page 19
Operations on the DX1000/DX1000N/DX2000