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| 8/24/2006 10:16 AM | |
Joined: 8/31/2005 Last visit: 10/24/2024 Posts: 217 Rating:
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Hi Ates! [quote user="Ates"]Hi, can someone inform me what is the difference between async and sync methods ? Have a look in the documentation of this article: Individual Visualization with OPC based on Microsoft® .NET and the Programming Language C#. Chapter "3.2 Differences between synchronous and asynchronous read and write jobs" is what you're looking for. [quote user="Ates"]and can some one link me some documents about .net opc handling without using dcom or wrapper or a document about telling which method is better to exchange data with opc and why ? If you want to use OPC without DCOM or a wrapper, you should use the XML-DA interface of the SIMATIC NET OPC server. This interface is based on a web service. But this requires a web server (e.g. IIS) installed on you PC. This article shows how to use the XML-DA interface: Using the XML-DA interface of the SIMATIC NET OPC server with Visual Basic .NET More articles on OPC can be found in the Communication folder of the Applications & Tools portal (There you should set the software filter to "OPC"). |
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Greetings, Chris |
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