3. Database Management
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History Message
The SVR-DS monitors the process and system and saves record message histories including
process and system alarms generated, guidance messages, digital tag operations and operator
operations.
A maximum of 8,000 histories can be saved per system in the hard disk (historical database) of
the SVR-DS. History data can be tracked in all the SVR-DS units.
Histories
Ethernet
OIS-DS
SVR-DS
History Messages
History Get Request/Response
Figure3.3 History Saving
The following event record messages are saved:
Ÿ
Process alarms
: Generation and recovery of process alarms
Ÿ
System alarms
: Generation and recovery of system alarms
Ÿ
Action records
: DI/DO signal changes of digital tags
Ÿ
Operation records
: Operations of the screen and keyboard by the operator
Ÿ
Guidance
: Generation of guidance messages
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: ......