Problem in updating values through OPC connected devices in WinCC 7.2

Hello friends,

I have problem  in  updation of values through OPC connected devices in WINCC . My system specifications are,

I am using Wincc7.2  on Server and on same server i have installed Topserver which is communicating to field devices .

my  problem is the field devices updaing values on topserver continuously but that values are taking to much time to update on wincc.  around 3 to 4 min.

anyone have this kind of problem please let me know the solution. 

Thank You.

shiv

------------------------------------------------------------------------------------------
Split from OPC tag updating Problem [ update tags on active screen only].