3. Database Management
11
Table 3.1 Specification of Historical Database
Item
Specification
Collectable Data
PCS process tags
Internal OIS process tags
Application set values
Collecting Period
Fixed Period
Collection
Trend data :15 period types between 5s and 1 day
Report data :1 minute
Common trend/report data: 20s to 1 minute
Events
Event conditions
No collection
Collected by application program
Number of Collection Points
Maximum 5,000 tags/system
Maximum 200 tags/second-SVR-DS
Number of Saved Samples
Maximum 10,000 samples/tag
Maximum 20 million samples/SVR-DS
Save Period
Approx. 14h to 10,000 days
In accordance with collection period
l
l
l
l
Historical Tag
Historical trend data, history messages and report data are managed for each historical tag. A
maximum of 5,000 historical tags can be set up in the SVR-DS. Historical tags are set up each
with a historical tag name, tag number, atom name, collection period, save period and other
information. Archive groups can also be set up.
Those historical tags used in the report function are set up with report data processing type and
other information.
l
l
l
l
Redundancy of Historical Database
The SVR-DS redundant system makes historical tag data redundant. If one SVR-DS unit fails
and some data in the historical database is missing, the historical tag data is equalized and
missing data will be recovered when this SVR-DS unit is started up again.
See the section related to control of the redundant system for cautions about equalization.
Summary of Contents for 6F8C0791
Page 1: ...SVR DS System Function Manual 6F8C0791 Toshiba Integrated Control System MENU ...
Page 10: ...Safety Precautions viii ...
Page 22: ...2 Tag Management 8 ...
Page 48: ...4 Background Processing 34 ...
Page 52: ...6 Time Monitoring 38 ...
Page 56: ...8 SVR Engineering 42 ...
Page 62: ...Appendix1 System Specification Of OIS DS SVR DS 48 ...
Page 63: ......