5 Replies Latest reply on Nov 26, 2013 11:44 AM by Gregor

    Difference between PI OPC DA and PI OPC HDA Servers

    kokolopr

      What is the difference between DA and HDA? I have started programming and looks like all the functionality is available in both. PI OPC DA can fetch history data if requested like HDA. 

       

      Thanks 

       

      Prabhakar