![]() ![]() The following application examples include the following visualization products, that are representative for all such systems: The applications presented on this page will answer this question. What options are available with W&T Com-Servers in such systems? The OPC server provides OPC clients with I/O values in the form of items.ģ Ethernets are more and more replacing traditional RS232 and RS485 interfaces as the preferred transfer medium.Ĥ All devices such as PLCs, digital I/O Com-Servers, serial Com-Servers, etc. Reads/writes I/O values (=items) from/to the OPC serverĢ OPC server as software components from manufacturers of field devices, visualization systems or third-party suppliers. Towards the lower level, the values or contents of these items are detected by the OPC server by means of special protocols.ġ Windows applications (e.g. Towards the application, it provides a standardized OPC software interface, which makes I/O data available in the form of items. ![]() In order to remain independent of the many brand-specific protocols, most visualization systems use OPC (OLE for Process Control) technology for the transfer of data to and from the field level.Īs shown in the diagram, the OPC server works as a gateway application. They provide MMIs (man-machine interfaces). ![]() Visualization systems of various manufacturers have established themselves as standard solutions in the field of automation. ![]()
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December 2022
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