Yokogawa Removable Chassis DX1000N Manual do Utilizador descarregar pdf (Página 35)

Explanation of the Advanced Security Function

IM 04L41B01-05EN

1-29

Index

App

1.5 Audit Trail Function

SET0 Directory Operations

Save Operation (When not using media FIFO)

If there is not enough free space on the CF card, the DX cannot save the data in the

internal memory to the CF card. When this happens, an error occurs, and the save

operation cannot be performed. Use another CF card to save the data.

Save Operation (Always retain most recent data file/media FIFO)

The newest data files are always kept on the CF card. With this method, you can use the

DX continuously, without changing the CF card.

For the setting procedure, see section 6.2 in the User's Manual.

• Operation

File 1 File 2 File 3 File 4

Deleted Saved

Update date

Medium

Old New

If there is not enough space to save a new le, the DX deletes the oldest les and

then saves the new le. This operation is referred to as FIFO (rst in rst out).

• FIFO is only used when the following les are saved automatically

. When les are

saved using other methods, FIFO is not used.

Setup les and change settings log les

• Files subject to deletion

All les in the destination directory, except for the ones listed below

, are subject to

deletion.

Files not subject to deletion: Hidden les, read-only les, and les contained within

subdirectories in the destination directory.

• The most recent 100 les are retained. If there are more than 100 les in the

destination directory

, even if there is enough free memory, older les will be deleted

so that the le number remains at or below 100.

• When there are more than 100 les in the destination directory, one or more les

are deleted before the new le is saved.

The number of les does not remain at or

below 100 in this case.

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