Take a look at
this page specifically, it details the exact math behind each of the P, I, and D parts of the controller.
Integral:
Derivative:
So in the integral case, Ki = Kc/Ti. It's a similar thing for the derivative part.
Disclaimer: I have no idea if NI has changed their implementation since I last looked at it (a year or two ago), so verify exactly what constants are used with the 2015 docs when they come out.