https://forge.codesys.com/forge/talk/Engineering/thread/318afe7e08/2022-08-10T09:53:05.769000ZRecent posts to New to CODESYS - Unresolved reference2022-08-10T09:53:05.769000Z2022-08-10T09:53:05.769000Zvaxmanhttps://forge.codesys.com/u/vaxman/https://forge.codesys.com222507d2556dcba50702dcd3b0e4685bc995cf78

<div class="markdown_content"><p>I have resolved this issue. The problem was caused by an outdated CODESYS on the Weintek panel. Once I updated the CODESYS, these issue went away.</p></div>

2022-07-28T09:05:55.386000Z2022-07-28T09:05:55.386000Zvaxmanhttps://forge.codesys.com/u/vaxman/https://forge.codesys.comfe75939f2ea9cc239d8e34ad37cf266930c9584a

<div class="markdown_content"><p>Greetings</p> <p>I am new to CODESYS and I have been having difficulties learning my way around the development system - I hope I am posting the in correct area. </p> <p>I am tying to create a Tcp Client using CODESYS installed and running on a Weintek HMI panel. <br/> I have the "CAA Net Base Services Library" installed and I am using the TCP function blocks. I created a singlel POU to perform a client connect.</p> <p>The project compiles, but when I attempt to download to the PLC I receive two errors:</p> <p><span>[FATAL ERROR]</span> Unresolved reference: 'CAA_TASKLOCK'<br/> <span>[FATAL ERROR]</span> Unresolved reference: 'CAA_TASKUNLOCK'</p> <p>Not being familiar with the CODESYS environment, I am struggling to determine what I have missed and how to resolve. I can't even determine HOW to track this down.</p> <p>If anyone has any thoughts, I would appreciate your input.<br/> thank you.<br/> MSC</p></div>