I need to read the data from the PLC using .net. I have read the data using Unitronics.dll . Steps i need to do. 1) Look if the PLC cycle is running 2) if running Fetch the data on runtime (not from data table) 3) Stop if the PLC cycle is stopped Right now i have continuously looped after each second to see the cycle and look for the data. But the PLC cycle and my .net program cycle differs in time and which fails to get the complete data. Is there any Listener to do this .Please give the example for the same.