Hi Saurav_Patel,
Perhaps you could find out more about it here:
Introduction to DNP3
http://www.ni.com/white-paper/11863/en/
http://sine.ni.com/psp/app/doc/p/id/psp-960/lang/en
You'll need to check from your NI MAX under software if you have DNP3 driver. I believe you need the NI LabVIEW Driver for DNP3 Master and Outstation Support: http://sine.ni.com/nips/cds/view/p/lang/en/nid/209092
If you plan to purchase it, do check the compatibility chart here: http://digital.ni.com/public.nsf/allkb/377EDC4553325CD386257A1E00729F5C
Hope it helps
Warmest regards,
Lennard.C