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• Create a "Standard project" and select CODESYS Control Win V3 as the device.
• Define the target system by means of the Network scan.
  
  
  
  
  
• Open the Library Manager and add the following libraries:
  Net Base Services
  
  
  
  
  
• Edit the PLC_PRG POU as follows:
  
  

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  Section
  Column width 7 Declaration Column width 93 Code Block theme Confluence VAR fbAsyncProperty : NBS.AsyncProperty := (tnTaskName := 'itfAsyncTask', usiTaskPrio := 75, udiTaskInterval := 1000); fbResolveHostname : NBS.ResolveHostname := (itfAsyncProperty := fbAsyncProperty); xResolve : BOOL; ipAddress : NBS.IPv4Address; itfIpAddress : NBS.IIPAddress := ipAddress; END_VAR

  
  

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  Section
  Column width 7 Implementation Column width 93 Code Block theme Confluence fbResolveHostname(xExecute:= xResolve, udiTimeOut:= 10000000, //10sec10 seconds sHostname:= 'www.codesys.com', itfIPAddress:= itfIpAddress); IF fbResolveHostname.xDone THEN xResolve := FALSE; END_IF

  
  

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• Load the project to the controller and start it. Set The variable xResolve to TRUE.