Historical Database - Toshiba TOSDIC-CIE DS Manual

3. Database Management

Historical Database

The historical database resides in the hard disk of the SVR-DS. The historical trend data, history
messages, report data, and user application data operated by the SVR-DS are collected and saved
for each historical tag. The data is read by the OIS-DS.
Historical tag setup
žPCS tag number
žSave period (number of
samples)
žArchive group
žReport data processing
Tag Data
History
Message
After its storage period is passed, the historical tag data will be deleted from the historical
database. The historical tag data can be saved in the auxiliary storage device as backup data.
Reading backup data from the auxiliary storage device, the data can be trend-displayed like
historical tag data as archive data.
The specification of the historical database is as follows:
10
Screen display
žTrend display
žHistory message display
Historical Tag Interfaces
Historical Database
Data collection
History message
collection
Figure 3.2 Data Processing of Historical Database
User
applications
Historical Tag
Data
HD
Auxiliary Storage Device
Reports
žMaintenance
ž Printing
Report Data
Archive
Data
HD