Private TcAdsServiceDuplexClient wcfClient If the netid string is empty, the TwinCAT ADS WCF service will use the TwinCAT Runtime on its host machine. Public partial class MainPage : UserControl A read action by the use of the Read1 method is requested by the use of the Read1Async method and the response will raise the Read1Completed callback This is important because silverlight allows asynchronous communication only. While using the WCF service within a Silverlight application, all methods of the used context interface are appended with the postfix Async.Īnd there is a extra callback method for each method with the postfix Completed too.Įxample: Read1 -> Read1Async, Read1Completed The DLL (Silverlight) is used to read the data from the recieved byte array in an easy to handle way. Reading symbol data from the PLC by ADS notification callback on symbol change. ![]() ![]() Event driven reading TwinCAT ADS WCF Samples
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