Reading quad encoder with 9870

[Hafis]

Hi there, my project involves using a quadrature encoder to sense the position and degrees of two encoders.

I have successfully modified the example vi from http://zone.ni.com/devzone/cda/tut/p/id/3921 using NI 9411.

However, I would like to know how I can read this data from the 9411 module into the NI 9870.

I have read examples of DMA from http://zone.ni.com/devzone/cda/tut/p/id/4534 but I do not clearly understand how it works.

How can I implement the FPGA file that I have achieved using NI 9411 to NI 9870 without serial connection.

Thank you