Echelon i.LON SmartServer 2.0 - Manual (Page 329)

i.LON SmartServer 2.0 Programmer’s Reference 20-7
3. Enter a name, location, and project type for the project, and then click OK.
4. Add a Web reference to the version 4.0 WSDL to your project. To do this, follow these steps:
a. Click Project and then click Add Web Reference. The Add Web Reference dialog opens.