The OPC Foundation has more than 300 members worldwide. These include the most
important manufacturers of control systems, process instrumentation and process control
systems worldwide. SIEMENS is a member of the OPC Foundation.
The declared goal of the OPC Foundation is vertical integration of information from the field
level through to the enterprise level. Using the OPC standard, this integration is possible
regardless of the system and manufacturer.
The most important standards of the OPC Foundation for OpenPCS 7
● Data Access Custom Interface Standard
● Data Access Automation Interface Standard
● Historical Data Access Specification Standard
● Historical Data Access Automation Interface Standard
● Alarms and Events Custom Interface Standard
● Alarm & Events Automation Interface Standard
2.4 Components of OpenPCS 7
Overview
OpenPCS 7 provides the following components:
● OPC DA (Data Access server)
● OPC HDA (Historical Data Access server)
● OPC A&E (Alarms & Events server)
● OPC "H" A&E (Historical Alarms & Events server)
● OLE DB
In the following graphic, you can see all the OPC components that will run on the OpenPCS
7 station. The figure also shows the PCS 7environment. OLE DB starts a direct database query
on the PCS 7 OS server.
Basics
2.4 Components of OpenPCS 7
OpenPCS 7
12 Function Manual, 05/2012, A5E02780178-02
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