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Where can I find these libraries?
Grazie mille per la tua collaborazione, sei stato davvero molto disponibile. OpcNetApi dlls are free to be redistributed, and you can get them from many open source software, or also you can find them included in some of your PLC software.
When I try to connect I get the error:. I mean not local network ,but Internet. This solved the issue for me. And when the data is changed in PLC everything works perfectly. How can I do this? Can opcnetapi.dpl read the values through the OPC Test client?
Opc client with C#: an how to video – Mesta Automation
Otherwise you can purchase a fleshed out component from a company like Kepware or Matrikon. Server fact, null ; server. Eventualmente prova a spostare la connessione al server quando apri al pagina e a disconnetterti quando la chiudi.
Factory from which OpcCom. Or you can manually add the dlls to opcnetapi.dl binary folder debug or release, depends on how you compile.
I will make some tests in the weekend to see if i can reproduce the error and find a solution. They are Free and part of the core OPC Foundation and can be found here click on Archives tab if you need previous versions.
Disconnect ; if server!
Da quello che mi pare di capire te invece hai messo il codice per accedere all’opc server direttamente nel client, per cui devi fare il refresh della pagina per aggiornare i dati. Ho creato un sito Asp.
I made a video where i explain how to connect and read tags from and Opc oopcnetapi.dll using OpcNetApi. You can create as many groups as you want with the update opcnetapi.ldl that you specify. I will do some tests at home with a new windows installation and see if there is something broken.
I have also placed these dlls under my Debug folder. By the way to debug this things you need to browse the items with a test client, but you can also do it with OpcNetApi dll.
But overall, nice app! Also are you using RsLinx classic or the free one?
OpcNetApi.dll | Classic OPC: DA, A&E, HDA, XML-DA, etc. | Forum
Nuno October 23, at Should it be groupStateWrite. But since WPF and Silverlight was released.
The problem with array is that you have to define the size, so if you want to transfer an array of 5 bits you must send exactly 5 bits and declare Sample,L5.