The data will continue through the OPC database until communications is restored. This service allows the data from the OPC database to be stored locally if communications with the central Pi server are lost. The point source (remote server OPC database) is defined so the central Pi server can be configured to accept data from the specific data points listed in the central database tags.įigure 2 shows the general interface configuration options with the server descriptions and point source identifiers.Īnother important piece of the interface is the buffer service. This piece of software essentially allows the user to create and modify the service to handle the transfer of the data from the tags written in the OPC database from KEPServerEX.
The Pi software comes with configuration utility software to set up and configure this interface.
The next piece of the communications puzzle is the interface between the remote server and the central Pi server. Once the tags have been created and configured with the correct address from the PLC, the data can be viewed in real time with a built-in OPC Quick Client to ensure proper setup and configuration of the data tags.įigure 2: Screenshot of general interface configuration in the Pi interface configuration utility software.
The spreadsheet is a time saver for setting up the addresses and provides a reference document for future updates.
