ABB 07KT97 GJR5253000R4270 800XA module
You can start your own OPC server on each of several personal computers. Each OPC server is an additional station on the AF 100 bus. These OPC servers are usually unaware of each other. They can handle any desired area in the plant, which may be different or the same area.
MMI OPC clients can connect to these OPC servers as needed. The MMI OPC client can provide the ability to select two OPC servers as redundancy to each other. If an OPC server fails,
The MMI client can automatically switch to another OPC server and continue to display the values smoothly. In the case of redundant OPC servers, both systems will cover the same area of the plant. This means that both OPC servers must select the same station in the AC 100 OPC server’s Configuration Wizard dialog box station filtering, the same data about the filter station in their BCD database (or the same BCD database), and the same values for all dynamic items.
Figure 20. Station filtering This is normal because all dynamic values are extracted from (the same set of) controllers.
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