https://forge.codesys.com/forge/talk/Runtime/thread/91adf81f54/2020-02-27T15:37:39.416000ZRecent posts to Logging some variables to file2020-02-27T15:37:39.416000Z2020-02-27T15:37:39.416000ZAnonymoushttps://forge.codesys.com/u/*anonymous/https://forge.codesys.com4ffc1ed22ec8298556eef5146d15eb295d29675f

<div class="markdown_content"><p><em>Originally created by:</em> Primitive Source</p> <p>Hi, I am resurrecting this thread as I am having some issues with my CSV logging. I am using the CAA file library standard example for creating a CSV file, this works fine and this writes my string to a CSV file. The issue I am having is that rather than writing the string to the CSV file in a new line each time it is triggered to do so, it just overwrites the old data. I have opened the file in append mode and the last part of my string is '$R $N'. I am not sure where I am going wrong.</p> <p>Does anyone know or have faced this issue before?</p></div>

2020-02-27T15:37:38.669000Z2020-02-27T15:37:38.669000Zchris.beardhttps://forge.codesys.com/u/chris-beard/https://forge.codesys.combf1bd92200d8a69db9d1bb1c411214e6ee88b818

<div class="markdown_content"><p>The oscat network library is the library you would need. </p> <p>Sent from my SM-N9005 using Tapatalk</p></div>

2020-02-27T15:37:37.912000Z2020-02-27T15:37:37.912000Zchris.beardhttps://forge.codesys.com/u/chris-beard/https://forge.codesys.comacfd06a550785f7bd2441d609105905e35734159

<div class="markdown_content"><p>OK. In my opinion the best way to do it is still using the standard libraries in Codesys. </p> <p>See this thread for a good explanation. </p> <p>l <a class="" href="http://forum.codesys.com/viewtopic.php?t=7089" rel="nofollow">viewtopic.php?t=7089</a> l </p> <p>Sent from my SM-N9005 using Tapatalk</p></div>

2020-02-27T15:37:35.692000Z2020-02-27T15:37:35.692000Zsyomahttps://forge.codesys.com/u/syoma/https://forge.codesys.com46a6da1d487456217c1190608e3f5f2333a2f946

<div class="markdown_content"><p>For example, I have a PID controller, running at 100ms rate. I want to capture transient process of about 20 seconds by logging temperature and controller output every 100ms to make offline analysis and calculate better tuning coefficients for it.</p></div>

2020-02-27T15:37:34.947000Z2020-02-27T15:37:34.947000Zchris.beardhttps://forge.codesys.com/u/chris-beard/https://forge.codesys.com5d9dc36e3cc82711c38dca44691cdc57ebcf842b

<div class="markdown_content"><blockquote> <p><strong>syoma hat geschrieben:</strong><br/> Hi there, <br/> I'm using RPI with Codesys and would like to know - is there any possibility to log the value of any variable to file, including some sort of timestamp. Is it possible without complex CSV or whatever file operations?<br/> In my application I have a temperature sensor, which I want to log.<br/> Thank you</p> </blockquote> <p>How long do you want to log the variable for and at what frequency? </p> <p>Sent from my SM-N9005 using Tapatalk</p></div>

2020-02-27T15:37:34.248000Z2020-02-27T15:37:34.248000Zsyomahttps://forge.codesys.com/u/syoma/https://forge.codesys.com5ad8c31139ebee341a1279452ea4a9b627a1ea2b

<div class="markdown_content"><p>Hi there, <br/> I'm using RPI with Codesys and would like to know - is there any possibility to log the value of any variable to file, including some sort of timestamp. Is it possible without complex CSV or whatever file operations?</p> <p>In my application I have a temperature sensor, which I want to log.</p> <p>Thank you</p></div>