Internal Process Processing Signals; Redundant System Control - Toshiba TOSDIC-CIE DS Manual

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.

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.
Application Processing
Data
Retrieval
Internal Tag
Control Process
Input
Figure 4.6 Internal Process Signal Processing and I/O Signals
Internal Process Signal
Processing
Application Internal -
Processing
Alarm Monitor State
Alarm Detection
4. Background Processing
Monitor Function
Standard Screen
Historical
Graphic
Report
Application
Output
Alarm Notification
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