https://forge.codesys.com/forge/talk/Deutsch/thread/ce9bf36a5a/2020-02-28T11:57:13.517000ZRecent posts to UDP Protokollaufbau der Netzwerkvariablen2020-02-28T11:57:13.517000Z2020-02-28T11:57:13.517000ZJ Schohaushttps://forge.codesys.com/u/j-schohaus/https://forge.codesys.comcb0aa2e8793f29b99452732c31e67ea0e7e61cbf

<div class="markdown_content"><p>Hallo Thomas</p> <p>Ich habe die Kommunikation von Netzwerkvariablen mit ein PC verwendet.</p> <p>Als Kopf Daten konnte ich folgendes durch Probieren herausfinden</p> <div class="codehilite"><pre><span></span> <span class="o">//</span> <span class="n">Kopf</span> <span class="n">von</span> <span class="n">Netvariablen</span> <span class="n">nachbilden</span> <span class="n">als</span> <span class="n">vergleichstabelle</span> <span class="o">//</span> <span class="n">DataKopf</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="n">DataKopf</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="o">=</span> <span class="mi">45</span><span class="p">;</span> <span class="n">DataKopf</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="o">=</span> <span class="mi">83</span><span class="p">;</span> <span class="n">DataKopf</span><span class="p">[</span><span class="mi">3</span><span class="p">]</span> <span class="o">=</span> <span class="mi">51</span><span class="p">;</span> <span class="n">DataKopf</span><span class="p">[</span><span class="mi">4</span><span class="p">]</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="n">DataKopf</span><span class="p">[</span><span class="mi">5</span><span class="p">]</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="n">DataKopf</span><span class="p">[</span><span class="mi">6</span><span class="p">]</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="n">DataKopf</span><span class="p">[</span><span class="mi">7</span><span class="p">]</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="o">//</span> <span class="n">Listennummer</span> <span class="o">/</span> <span class="n">COB</span><span class="o">-</span><span class="n">ID</span> <span class="n">DataKopf</span><span class="p">[</span><span class="mi">8</span><span class="p">]</span> <span class="o">=</span> <span class="mi">1</span><span class="p">;</span> <span class="n">DataKopf</span><span class="p">[</span><span class="mi">9</span><span class="p">]</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="n">DataKopf</span><span class="p">[</span><span class="mi">10</span><span class="p">]</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="n">DataKopf</span><span class="p">[</span><span class="mi">11</span><span class="p">]</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="o">//</span> <span class="n">Anzahl</span> <span class="n">der</span> <span class="n">Variablen</span> <span class="n">DataKopf</span><span class="p">[</span><span class="mi">12</span><span class="p">]</span> <span class="o">=</span> <span class="mi">3</span><span class="p">;</span> <span class="n">DataKopf</span><span class="p">[</span><span class="mi">13</span><span class="p">]</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="o">//</span> <span class="n">Anzahl</span> <span class="n">der</span> <span class="n">Byte</span> <span class="n">ink</span><span class="p">.</span> <span class="n">Kopf</span> <span class="n">DataKopf</span><span class="p">[</span><span class="mi">14</span><span class="p">]</span> <span class="o">=</span> <span class="mi">124</span><span class="p">;</span> <span class="n">DataKopf</span><span class="p">[</span><span class="mi">15</span><span class="p">]</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> </pre></div> </div>

2020-02-28T11:57:10.801000Z2020-02-28T11:57:10.801000ZTom2https://forge.codesys.com/u/tom2/https://forge.codesys.comb2f3330e97addd285d97efc4dca2395d88b868e9

<div class="markdown_content"><blockquote> <p><strong>gravieren hat geschrieben:</strong><br/> Hi<br/> Schau doch mal unter w <a class="" href="http://www.oscat.de" rel="nofollow">www.oscat.de</a> w vorbei.</p> </blockquote> <p>Das werde ich machen...</p> <p>Für eine Spezifikation von 3S hoffe ich aber doch noch auf den richtigen Link von einem der Fachleute von 3S...</p> <p>bis dann</p> <p>Thomas</p></div>

2020-02-28T11:57:03.505000Z2020-02-28T11:57:03.505000Zgravierenhttps://forge.codesys.com/u/gravieren/https://forge.codesys.com26a6c14da859e6754694f49d902448b5468f0cf8

<div class="markdown_content"><p>Hi</p> <p>Schau doch mal unter w <a class="" href="http://www.oscat.de" rel="nofollow">www.oscat.de</a> w vorbei.</p> <p>Da gibt es eine Quelltextoffene Bibliothek für das Netzwerk.</p> <p>Der Entwickler ist öffters im OSCAT-Forum.</p> <p>Stelle deine Frage in der Sparte NETWORL.LIB</p></div>

2020-02-28T11:57:00.729000Z2020-02-28T11:57:00.729000ZTom2https://forge.codesys.com/u/tom2/https://forge.codesys.com661867e737926235d1853d3325c5d0701c35f776

<div class="markdown_content"><p>Hallo zusammen,</p> <p>wer weiß, wo der genaue Aufbau des UDP Protokolls für die Übertragung der Netzwerkvariablen zu finden ist.</p> <p>Im Header steht je eine Kennung, die Variablenlisten ID, die Prüfsumme etc...</p> <p>In diesem Zusammenhang wüsste ich auch gern, wie die Prüfsumme berechnet wird.</p> <p>Ziel ist es, von einer S7 Steuerung aus ein solches CoDeSys conformes UDP Paket zu versenden.</p> <p>bis dann</p> <p>Thomas</p></div>