Rohan Posted May 30, 2017 Report Share Posted May 30, 2017 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. Quote Link to comment Share on other sites More sharing options...
MVP 2022 Joe Tauser Posted June 12, 2017 MVP 2022 Report Share Posted June 12, 2017 It sounds like your cycle runs rather quickly if you're doing a one second poll. PLC model? Serial or Ethernet? I would buffer the data in the PLC itself while the cycle is running and read the data from there after the fact. You're going to have a hard time synchronizing a Windows box to a PLC at that speed. Joe T. Quote Link to comment Share on other sites More sharing options...
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