History Message - Toshiba TOSDIC-CIE DS Manual

3. Database Management
l l l l 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.
The following event record messages are saved:
Ÿ Process alarms
Ÿ System alarms
Ÿ Action records
Ÿ Operation records
Ÿ Guidance
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SVR-DS
OIS-DS
History Messages
History Get Request/Response
Figure3.3 History Saving
: Generation and recovery of process alarms
: Generation and recovery of system alarms
: DI/DO signal changes of digital tags
: Operations of the screen and keyboard by the operator
: Generation of guidance messages
Histories
Ethernet