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POModbus Tcp For silverlight
 

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    <p>Original Question:</p> <p>I'm looking for a silverlight library or example that shows me how to use the silverlight framework to connect to a modbus device by tcp. </p> <p>I've found multiple libraries using the tcpClient <code>from system.net.sockets.tcpclient</code> but this namespace is not availeble in silverlight. So .net librarys won't do the trick</p> <p>also, just for background information, i'm building a windows phone app, and I have allready looked into the example " using sockets in windowsphone" on the msdn site <a href="http://msdn.microsoft.com/en-us/library/hh202858%28v=vs.92%29.aspx" rel="nofollow">(Link)</a></p> <hr> <p>Edit 1:</p> <p>After some time programming, I am able to write the holding registers of the modbus device using the <code>System.net.sockets</code> library only. Problem is, i get a return byte from my modbus device. Also, i had a receive function to read registers on the modbus device which also returns bytes.</p> <p>I used to catch bytes like this (using <code>System.Net.Sockets.TcpClient</code>:</p> <pre><code> // Making a new netwerk stream named ns NetworkStream ns; // Function for receiving protected override int ReceiveByte() { // Check for byte, if byte, read it and put it in a byte array. if (ns.DataAvailable) return ns.ReadByte(); // If there's no data left, return; else return -1; } </code></pre> <p>What I'm asking for is these things: 1. Is there a function in the <code>System.net.Sockets</code> that has the same functionality as the Networkstream.Readbyte? 2. If there is no function able to do the same thing. Are there otherways, and if so, are there examples, or can someone get me started?</p> <p>Thanks :)</p> <hr>
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    1. USBart Teunissen
    1. USBart Teunissen
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      1. USFelice Pollano
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    1. COWhat version are you targeting? Sockets can only be used for applications targeting WP7.1(a.k.a. Mango) or higher.
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      1. USDragos Calin
    2. CO@DragosCalin i'm targeting WP7.1 and higher :) so that is not the problem. The problem lies in that all the libs that i can find rely on the system.net.sockets.tcpclient.. which phone 7.1 doesn't have
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      1. USBart Teunissen
    3. COI've seen this approach before and I'll ask the question again - why go direct to modbus from a phone?? PLCs are a highly specialized and primitive part of infrastructure. Why not pick a more suitable point in that infrastructure to interface - something like a local HMI/server? This makes the whole system much more robust, flexible, and secure. It also massively simplifies your task.
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