https://forge.codesys.com/forge/talk/Motion/thread/139ae439f2/2020-09-10T04:29:41.856000ZRecent posts to CNC functions G41 and G51 doesn't work togheter2020-09-10T04:29:41.856000Z2020-09-10T04:29:41.856000Zeschwellingerhttps://forge.codesys.com/u/eschwellinger/https://forge.codesys.com80b58fb54e57b548622a185dff8cbbdd1387edd6

<div class="markdown_content"><p>...add a bug report to the CODESYS store -&gt; my question. With detailed info an steps to repeat.</p></div>

2020-09-03T13:31:03.951000Z2020-09-03T13:31:03.951000Zalejhohttps://forge.codesys.com/u/alejho/https://forge.codesys.coma1b250db3e3dc48e983e9a0cd1719a6a9544b121

<div class="markdown_content"><p>Using the CNCprepro example I tried to design a very simple trajectory:</p> <p><img src="./attachment/path_base.png" width="50%"/></p> <p>If I try to compensate the tool radius using <strong>only</strong> G41 it display the trajectory correctly:</p> <p><img src="./attachment/path_with_G41.png" width="50%"/></p> <p>If I try to sooth the trajectory using <strong>only</strong> G51 it display the trajectory correctly:</p> <p><img src="./attachment/path_with_G51.png" width="50%"/></p> <p>If I use <strong>at the same time</strong> G41 and G51 the behaviour is different depending on the order I use these functions, but in both case looks incorrect to me.<br/> When G51 precedes G41 the first one it's just ignored:</p> <p><img src="./attachment/path_with_G51andG41.png" width="50%"/></p> <p>When G41 precedes G51 it's just a mess...<strong>it seems that the smoothing D value of G51 is used by the G41</strong></p> <p><img src="./attachment/path_with_G41andG51.png" width="50%"/></p> <p>I think there's also an error in the documentation here.</p> <p><img src="./attachment/error_docs.png" width="50%"/></p></div>