https://forge.codesys.com/forge/talk/CODESYS-V2/thread/6634ae2b15/2020-02-27T22:40:29.267000ZRecent posts to Trace2020-02-27T22:40:29.267000Z2020-02-27T22:40:29.267000ZLeonLhttps://forge.codesys.com/u/leonl/https://forge.codesys.com5e84c59b3d074ef2fda671cdd07f0724dfa750ad

<div class="markdown_content"><p>Yea, I ended up going with a ringbuffer. Thanks for the reply. </p></div>

2020-02-27T22:40:24.794000Z2020-02-27T22:40:24.794000ZRolf-Geislerhttps://forge.codesys.com/u/rolf-geisler/https://forge.codesys.com19a2dfc530db9ddcd57cc77e87b32b781ad340c8

<div class="markdown_content"><p>Hi,</p> <p>I'm afraid the CoDeSys sampling trace will not work for that purpose.</p> <p>You need to store the wanted signals / values into a ring buffer, e.g. an array with a revolving index. Array members may be STRUCTs.</p> <p>Regards</p> <p>Rolf</p></div>

2020-02-27T22:40:23.051000Z2020-02-27T22:40:23.051000ZLeonLhttps://forge.codesys.com/u/leonl/https://forge.codesys.com8de68023c7bf8852bfe7d4c31da4b9e6148cc645

<div class="markdown_content"><p>Is it possible to control the "Sampling Trace" from code rather than the GUI? For example I want the trace to always be runing and when a certain signal goes high it should write the content of the trace buffer to disk.</p> <p>What I'm looking for is a bit like a blackbox in an airplane, I want signal changes to be recorded and if something goes wrong (signaled by a incoming signal) it should save this so that the error can be traced. It should be automaticaly and not requier human intervention.</p> <p>Can I do this with the "Sampling Trace"? If not is there some other way I can implement this?</p> <p>Thanks in advance</p> <p>Leon Ljunggren</p></div>