Yokogawa Removable Chassis DX1000N - Manual (Page 33)

Explanation of the
Advanced Security Function
IM 04L41B01-05EN
1-27
1
2
3
Index
App
1.5 Audit Trail Function
How the Change Settings Log Is Saved
• The DX can record up to 200 change settings log entries in its internal memory. When
the number of log entries exceeds 200, the oldest log entries are overwritten.
• A change settings log file (.TXT extension) is created in the SET0 directory on the CF
card, and the logs are added to this file. When the number of logs reaches 100, a new
file is created.
• The file name is generated automatically.
File Name Description
Mddhhmma.TXT The date and time of the first log entry
M
Month (1 to 9, X for October, Y for November, or Z for
December)
dd Day
hh Hour
mm Minute
a Last digit of the year (0 to 9)
Example: 40209250.
TXT
A change settings log file whose first log entry was created at 9:25
on April 2
Viewing a Change Settings Log
• You can display the change settings log in the internal memory on the DX screen.
• The change settings log is saved to the CF card in text format. You can display it using
a text editor. You cannot view it on the DX.
How to Clear the Change Settings Log
The change settings log in the internal memory is cleared when you initialize the settings
in basic setting mode.
Change-Settings Log When Recording (Memory Sampling) Is in Progress
Setting changes in setting mode and setting changes in basic setting mode result in
different logging operations.
For information about the display, see section 2.4.
For information about setting changes during memory sampling, see section 6.4 in the
User’s Manual.
Setting Changes in Setting Mode
The setting changes are recorded in the operation log. You can configure the DX to
automatically write into the measured data a message indicating that the settings have
changed. The DX does not save a setup file.
Setting Changes in Basic Setting Mode
The setting changes are recorded in the operation log. At the same time, a setup file is
saved to the CF card.
Logged Operations
The following setting changes can be logged during recording (memory sampling).
Settings Operation mode
Date and time settings Setting mode
Channel alarm settings
Alarm delay time settings
Calibration correction settings
Destination directory settings
Administrator settings
Basic setting
mode User settings