Yokogawa Removable Chassis DX1000N Bedienungsanleitung PDF herunterladen (Seite 31)

Explanation of the Advanced Security Function

IM 04L41B01-05EN

1-25

Index

App

1.5 Audit Trail Function

Operation Log

The DX operations are recorded in the operation log in the order that they occurred. The

operation log is contained within the measured data file.

For information about the display, see section 2.3.

For information about the contents of the log, see appendix 1.

Recorded Operations

• Operations that affect the measured data, such as memory start and message writing

are recorded. Error messages are also recorded.

• Key operations, communication operations, remote-control operations (/R1 and /PM1

options), event-action operations, and automatic DX operations (error messages, etc.)

can be distinguished from each other

• Op

erations that do not affect the measured data, such as screen switching and display

conguration changes, are not recorded.

For details, see appendix 1.

How the Operation Log Is Saved

• The DX can record up to 2000 operation log entries in its internal memory. When the

number of log entries exceeds 2000, the oldest log entries are overwritten.

• The log of the operations from the previous memory stop to the current memory stop

is stored in the measured data le (display or event data le). If the measured data le

is divided, each time a le is created, the operation log up to that point is saved in the

le.

•

When you use the multi batch function (/BT2 option), all the batch groups share the

same operation log.

The log entries from one memory stop to the next memory stop

are saved.

• You cannot just save the operation log in the internal memory

to a CF card.

Viewing an Operation Log

• You can display the operation log in the internal memory on the DX screen.

• You can display the operation log in a measured data le on the DX screen or the

DAQSTANDARD Viewer application.

How to Clear the Operation Log

• The operation log in the internal memory is cleared when you initialize the settings in

basic setting mode.

• You cannot clear the operation log in a measured data le.

A user’s password may change during operation.The login information is the user

name and the password at the time that the measured data file was created. To sign a

measured data file, you must log in as a user that is registered in the login information in

that measured data file. You cannot view the login information.

For information about the display, see the DAQSTANDARD Viewer manual.

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