Hello.

Re:

was unable to connect to my opc server

Please provide more details - what you have tried, and what symptoms/error message are you getting.

Re:

where can i download a copy of api complete guide to use your api

Here are the links, plus the documentation is in the product itself if you install it:

• QuickOPC.NET 5.11 Reference
• QuickOPC-Classic 5.11 Concepts (MAIN)
• QuickOPC-Classic 5.11 Quick Start
• Full documentation set, also for online browsing: http://www.opclabs.com/Resources/Prod...

Re:

may i know is there any limitation on your trial version?

As stated next to the download link: "The trial provides valid data to client application for 30 minutes; after that period, the component needs to be re-started."

In general, QuickOPC looks well suited for the task you have described.

Best regards

Hello, thanks for details. The demo should be able to connect to live servers.

Most common reason for "No such interface supported" error is missing OPC Core Components (such as OPC-DA proxy/stubs) on the server machine (they have to be presented on the client machine as well, but that is taken care of by QuickOPC installation). If you can, however, establish the remote connections from the same computer using other clients, the cause is probably different.

It might be the same problem as described here: http://www.opclabs.com/Support/Online...

That is, a different security setting might be needed. As you are using the .NET component, the resolution described there (using the EasyOPC Utility) does not directly apply.

Since we were planning to change the default of this setting anyway (and, but only in some future version, make it configurable in .NET component as well), we will just do it now, and make a new build of the product that you can test. Please allow approx. 1 day for it.