I don't believe there is a connector yet, but there has been some work on making a Web Data Connector for Daptiv - I found this project on GitHub: GitHub - kaustria/hackday-tableau although it does not seem to be complete.
Did you ever find out if there was a connector available for the Daptiv system. I am also looking to connect Tableau to Daptiv.
I need this as well. Is this ability coming soon?