DataHub® application examples - What you can do

Delivering Process/Operations Data to Web Browsers

Display OPC data on the web - table format

A company from the US is using the OPC DataHub with the Webserver option to display data from an OPC server in a web display that is viewed by their customers. The web display includes a Java table applet (requires DataHub TCP Connection license) that arranges the data in a clean tabular format, with table cells changing color based on the point value being delivered by the DataHub. The data updates at quicker than once a second and the web display contains approximately 300 point values.

Monitoring plant performance from home through a web interface

A Canadian chemical plant uses the OPC DataHub with the Webserver option to provide plant engineers with the ability to visit the company web site and view live performance data. So now, when the engineer gets a call at home, he can open up his web browser, log-in to the company site and review the latest data before making recommendations, or taking preventative action by changing process variables through the same web interface. No need to drive out to the plant for minor problems and he can react to problems rapidly and with enough information to make informed decisions.

Display OPC data on the web - trend format

Using the OPC DataHub with the Webserver option it is possible to display OPC data as a trend chart in a standard web browser, without using any plug-ins or special browser software. Using the AJAX web interface to display trend data allows the web page to be viewed in both desktop browsers and in web-enabled palm-top and hand-held devices. In this way, a plant engineer can carry a wireless hand-held device that displays trend data for the process as he walks around the plant floor. If a change is needed, he can enter new setpoints or make other changes directly from his hand-held device and then watch the change take effect, without having to return to a desk or workstation.

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