https://forge.codesys.com/forge/talk/CODESYS-V2/thread/f4aac19c9d/2020-02-27T22:29:39.278000ZRecent posts to Problem with Serial communication2020-02-27T22:29:39.278000Z2020-02-27T22:29:39.278000Zhcchinhttps://forge.codesys.com/u/hcchin/https://forge.codesys.com103fbca7a4c25d9eedcb01522332c018b19c3721

<div class="markdown_content"><p>May i know what hardware are you using for this SysLibCom library ?</p></div>

2020-02-27T22:29:37.680000Z2020-02-27T22:29:37.680000ZFaucheusehttps://forge.codesys.com/u/faucheuse/https://forge.codesys.com10f80bad992d6d6e26a8652382f08653fbb966ae

<div class="markdown_content"><p>Hello,</p> <p>I tried recently to use the SysLibCom library in CoDeSys with that program : </p> <p>IF(result=0)</p> <p>THEN</p> <div class="codehilite"><pre><span></span><span class="nt">PortTest</span><span class="o">:=</span><span class="nt">SysComOpen</span><span class="o">(</span><span class="nt">2</span><span class="o">);</span> <span class="nt">ParamCom</span><span class="p">.</span><span class="nc">byParity</span><span class="o">:=</span><span class="nt">0</span><span class="o">;</span> <span class="nt">ParamCom</span><span class="p">.</span><span class="nc">byStopBits</span><span class="o">:=</span><span class="nt">1</span><span class="o">;</span> <span class="nt">ParamCom</span><span class="p">.</span><span class="nc">dwBaudRate</span><span class="o">:=</span><span class="nt">9600</span><span class="o">;</span> <span class="nt">ParamCom</span><span class="p">.</span><span class="nc">dwScan</span><span class="o">:=</span><span class="nt">0</span> <span class="o">;</span> <span class="nt">ParamCom</span><span class="p">.</span><span class="nc">dwTimeout</span><span class="o">:=</span><span class="nt">0</span><span class="o">;</span> <span class="nt">ParamCom</span><span class="p">.</span><span class="nc">Port</span><span class="o">:=</span><span class="nt">2</span><span class="o">;</span> <span class="nt">ParamCom</span><span class="p">.</span><span class="nc">dwBufferSize</span><span class="o">:=</span><span class="nt">0</span><span class="o">;</span> <span class="nt">result</span><span class="o">:=</span><span class="nt">SysComSetSettings</span><span class="o">(</span><span class="nt">PortTest</span><span class="o">,</span><span class="nt">ADR</span><span class="o">(</span><span class="nt">ParamCom</span><span class="o">))</span> <span class="o">;</span> </pre></div> <p>END_IF</p> <p>b:='BONJOUR';</p> <p>c:=SysComWrite(PortTest,ADR(b),LEN(b), 100) ;</p> <p>resultClose:=SysComClose(PortTest);</p> <p>But it doesn't work : when I try to access the system, it's write "ParamCom.Port:= ***INVALID : 0", but I can run the program normally.</p> <p>What's the matter here ?</p> <p>Thanks for your help.</p> <p>EDIT : I saw that the matter is the handle returns by the SysComOpen functiun.</p></div>