How can I develop an OPC-Server with DataSocket in Visual Basic

[RacingWastl]

I want to develop an OPC-Server, that I can send measurement values and use this interface for customers. My software is in Visual-Basic with ComponentWorks and Datasocket.

[Chris Matthews]

You can't develop an OPC server with DataSocket. DataSocket is a client for OPC, but can't be a server. You can connect to any OPC server and read data items, but you can't be the server.

To be an OPC client with DataSocket, just use the ConnectTo function with a URL of "opc:\\\.

Best Regards,

Chris Matthews
National Instruments

[marticarlo]

If I want to create an OPC server with LabWindows/CVI can I use the Industrial Automation Server add-on?
Do I need one server runtime license for every installation of my OPC server product that I will develop?
I need for a modbus opc server for my customers to support our modbus instrumentation. Can you suggest me the easiest and chipest way to develop it?

Thanks
MC