https://forge.codesys.com/forge/talk/Runtime/thread/8edf4e24d0/2020-02-27T16:32:24.414000ZRecent posts to Modbus bugs with CODESYS V3.5 SP152020-02-27T16:32:24.414000Z2020-02-27T16:32:24.414000ZRoryLDMhttps://forge.codesys.com/u/roryldm/https://forge.codesys.comecf5b7e9a959e4f675ac5ada1e165abaf313b85c

<div class="markdown_content"><p>If it's Modbus RTU you will not be able to use Wireshark. Not without a protocol converter anyway. <a class="" href="https://www.youtube.com/watch?v=YtudbhexPv8&amp;ab_channel=IndustrialControlCommunications%2CInc." rel="nofollow">Here is a tutorial about that</a><a class="" href="https://www.youtube.com/watch?v=w9cnwkJFNKk&amp;ab_channel=%E9%99%B3%E5%BF%97%E8%B1%AA" rel="nofollow">look here.</a> Honestly just google what you're looking for, there is quite a bit of information available on wireshark. It's a pretty standard tool for a few people that are trying to decode or troubleshoot network traffic.</p> <p>Wireshark is...</p> <blockquote> <p><strong>Zitat:</strong><br/> Wireshark is an open source tool for profiling network traffic and analyzing packets. Such a tool is often referred to as a network analyzer, network protocol analyzer or sniffer.</p> </blockquote></div>

2020-02-27T16:32:21.973000Z2020-02-27T16:32:21.973000Zfrancoinfhttps://forge.codesys.com/u/francoinf/https://forge.codesys.com4c76b6263129d5f87c7d3e5ff7631b0b0119fca6

<div class="markdown_content"><p>Hi fleaplc, what is WIRESHARK?</p></div>

2020-02-27T16:32:21.124000Z2020-02-27T16:32:21.124000Zfleaplchttps://forge.codesys.com/u/fleaplc/https://forge.codesys.comdfb26cffa092f332d57d20dab6346d3fcdc0602c

<div class="markdown_content"><p>Did you try to sniff the communication with Wireshark to better understand if there's some error into a slave channel?</p></div>

2020-02-27T16:32:20.276000Z2020-02-27T16:32:20.276000Zfrancoinfhttps://forge.codesys.com/u/francoinf/https://forge.codesys.com2cc548d4103ba13438573c11ed5625e41a2fdf3c

<div class="markdown_content"><p>NOTE: I am using <strong>CODESYS CONTROL FOR RASPBERRY PI SL V3.5.15.10</strong> as runtime</p></div>

2020-02-27T16:32:17.847000Z2020-02-27T16:32:17.847000Zfrancoinfhttps://forge.codesys.com/u/francoinf/https://forge.codesys.com09279f70089aea4e93566b0f3ed24aa87326bf4a

<div class="markdown_content"><p>Hi all,<br/> my problem is that the modbus does not work properly with the SP15, while it works well with the SP11.<br/> With the SP11 I can read all the parameters, while with the SP15 I don't. To better explain the situation,<br/> I have attached two images, where it can be seen that with the SP11 I can read all the modbus parameters,<br/> while with the SP15 some yes and others not.<br/> What can I do to solve the problem?<br/> Thanks.</p> <p><img alt="IMG: modbus" rel="nofollow" src="https://forum.codesys.com//download/file.php?id=5025"/></p></div>