https://forge.codesys.com/forge/talk/Engineering/thread/0399efc7dc/2020-02-27T14:02:38.585000ZRecent posts to All available communication channels are already in use2020-02-27T14:02:38.585000Z2020-02-27T14:02:38.585000Zeschwellingerhttps://forge.codesys.com/u/eschwellinger/https://forge.codesys.comf66b41e136bec4643ccd55a22cf6f0b3b0624b41

<div class="markdown_content"><p>Hi,<br/> maybe these are are old bugs which have been already fixed in newer version.<br/> Do you have the chance to update your runtime and CODESYS Development System to currrent version (3.5SP10Patchx).<br/> BR<br/> Edwin</p></div>

2020-02-27T14:02:37.769000Z2020-02-27T14:02:37.769000Zfreedumzhttps://forge.codesys.com/u/freedumz/https://forge.codesys.com702ec042854b6ac99abdda8d70df1539eb99fa40

<div class="markdown_content"><p>I continue my investigation<br/> I've a switch with 1 TS, My plc and the network, if I try to etablish a connection here, it doesn't work but if I unplug the network, it works<br/> The weirdest thing? I changed nothing in my hardware configuration and before it was working without any problem<br/> The only thing I change I change my codesys version to 3.5.7 to 3.5.8</p></div>

2020-02-27T14:02:37.502000Z2020-02-27T14:02:37.502000Zfreedumzhttps://forge.codesys.com/u/freedumz/https://forge.codesys.com129cfa7f0bc90d6df6855dc4c9fea8f85a137694

<div class="markdown_content"><p>Thank you for your quickanswer<br/> It's since I've added the visu that I'm not able anymore to etablish a connection with my PLC, I make a trial with channel Info, it has worked 2 times and after the third time, I had this error message:</p> <p>But if I'm plug directly in my plc (so I unplug all the other devices), I can etablish a connection with it</p> <p>Any other idea?</p> <p><img alt="IMG: mix.png" rel="nofollow" src="https://forum.codesys.com//download/file.php?id=2768"/></p></div>

2020-02-27T14:02:37.219000Z2020-02-27T14:02:37.219000Zeschwellingerhttps://forge.codesys.com/u/eschwellinger/https://forge.codesys.coma061d429cfff4fa4c78a20e7a36051b465e4e0bf

<div class="markdown_content"><p>Hi,</p> <p>you should solve the root cause: Identify the program/application which does not release the channels<br/> in a correct way.<br/> First I would check in the plc shell which applications are connected:</p> <p>Usually one of them does not close the communication channels in a proper way.<br/> BR<br/> Edwin</p> <p><img alt="IMG: channelinfo.jpg" rel="nofollow" src="https://forum.codesys.com//download/file.php?id=2765"/></p></div>

2020-02-27T14:02:36.914000Z2020-02-27T14:02:36.914000Zfreedumzhttps://forge.codesys.com/u/freedumz/https://forge.codesys.com385ae1eaeba2f0051694aafcafdd0d5fbcbc9819

<div class="markdown_content"><p>Hi everyone,<br/> I'm working on codesys V3.5.8 and I have this error message: "Connection denied by device: All available communication channels are already in use"<br/> My plc is on a switch and it communicate with a touchscreen and I made a vizu, now I m not able to etablish a connection with this PLC<br/> I can ping it, I can reach it with <a class="">fttP://AdresseIP</a> ; I can see the vizu and the touhcscreen still communicate with it<br/> I saw on a board that I had to add this line in CODESYSCONTROL.cfg <br/> <span>[CmpChannelServer]</span> Buffersize=1600000 MaxChannels=8<br/> I added it at the end of the file but it's still not working<br/> So if someone knows what I have to do<br/> Many thanks in advance</p> <p>Dom</p></div>