4. Background Processing
31
Internal Process Processing Signals
SVR-DS performs signal processing such as linerization process, industrial unit conversion, and
alarm detection for process input signals of internal process tags.
Application Processing
Internal Tag
Control Process
Internal Process Signal
Processing
Application Internal -
Processing
Alarm Monitor State
Alarm Detection
Monitor Function
Standard Screen
Historical
Graphic
Report
Application
Data
Retrieval
Input
Output
Alarm Notification
Figure 4.6 Internal Process Signal Processing and I/O Signals
Redundant System Control
In a redundant system SVR-DS, online/standby switching is done when the online SVR-DS is
down. Switching is done when;
(1) online/standby is switched manually,
(2) the operation of the online SVR-DS stops, or
(3) an error occurs at the online SVR-DS and it is switched to standby.
In the redundant system, the following functions are made redundant.
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: ......