Can anyone provide me the link to download the PI interface for OPC DA?
This interface is not provided as a part of PI Developer's Club. If your organization has bought a licence of it, then you should be able to download it from https://my.osisoft.com/
Just complementing the information above: if your organization has bought the license, and you still cannot see it, then contact OSIsoft tech support to have your credentials added as one of the authorized users to download it. They will probably have to contact one of the authorized users to give you permission to the file.
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