The OPC Web Trend.NET control is .NET component that can be integrated into any ASP.NET web application. The component is 100% managed code and works with any local and/or remote OPC Systems Service.
No license is needed to use the components. It can connect to any OPC Systems Service that has an OPC Web Trend.NET license.
Refer to OPC Web Trend.NET properties section in this help file for more details on the OPC Web Trend component.