("Tags" refer to the name of a property in the server.)īecause there are numerous brands of OPC servers and HMI software, it is not possible to give detailed steps on setting up the server and configuring the HMI. Therefore it is necessary to define mappings from the model to the OPC server tags and then identify which tags are displayed in which locations in the HMI. As is typical of SCADA systems, values are placed in an OPC server and these values are then displayed from the OPC server to the HMI. Model results are not directly displayed in the HMI. The orange boxes are configuration steps that are set up once (unless changes are needed). The blue boxes are the work flow for a user. The process is summarized in the figure below. WaterGEMS/CAD enables a user to run an EPS analysis and display the results in a SCADA HMI.
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