https://forge.codesys.com/forge/talk/Runtime/thread/8f433509a6/2020-02-27T17:34:44.028000ZRecent posts to How to connect more than one DS18B20 temp sensor to unipi board2020-02-27T17:34:44.028000Z2020-02-27T17:34:44.028000Zfrancoinfhttps://forge.codesys.com/u/francoinf/https://forge.codesys.com85cefd90085a412e76dc1581e0f86ae9133d8c40

<div class="markdown_content"><p>I have solved. thank you all! </p></div>

2020-02-27T17:34:43.010000Z2020-02-27T17:34:43.010000Zfrancoinfhttps://forge.codesys.com/u/francoinf/https://forge.codesys.com0cf342acf99c40b5c2f5d3af3b4858a4329cc45a

<div class="markdown_content"><p>I followed step-by-step procedures but it does not work, while the individual sensors work perfectly. Lefrank, can you send me the step-by-step picture?<br/> Thanks!</p></div>

2020-02-27T17:34:40.174000Z2020-02-27T17:34:40.174000Zfrancoinfhttps://forge.codesys.com/u/francoinf/https://forge.codesys.com943dd44bd7811c6f50fdc23fae0622c21dfdfad1

<div class="markdown_content"><p>Hi Edwin and lefrank,<br/> I try with your suggestion, and I'll let you know.<br/> Lefrank, if I do not solve the problem I will ask you kindly the graphical steps <br/> Thanks!</p></div>

2020-02-27T17:34:39.161000Z2020-02-27T17:34:39.161000Zlefrank01https://forge.codesys.com/u/lefrank01/https://forge.codesys.coma3b693beddb92f0af76d6051eba0c58e492a7a96

<div class="markdown_content"><p>And by the way, when you are using the UNIPI DS18B20 Masterbus, the adress are managed from the UNIPI Bus unstead of Raspberri PI Bus. </p> <p>Have you used the script gave by UNIPI?</p></div>

2020-02-27T17:34:38.132000Z2020-02-27T17:34:38.132000Zlefrank01https://forge.codesys.com/u/lefrank01/https://forge.codesys.comf75d6aba23564bd32867712ad17cc67d37692b52

<div class="markdown_content"><p>Hi,</p> <p>I got this problem many times ago.</p> <p>Fastest ways to resolve your issue, </p> <p>Connect seperately each DS18B20 and check the unique address. For this I used the program example gived by CODESYS for scanning the address.</p> <p>Once you have the Unique adress of each DS18B20, you have to add the correct number of instance of DS18B20.</p> <p>Click Left on your DS18B20 MasterBus and add device.</p> <p>Then on each DS18B20 instance, you write the correct address. </p> <p>Once this done, you can read the value of each DS18B20.</p> <p>If you still having issue, I can send you step by step picture later.</p></div>

2020-02-27T17:34:35.276000Z2020-02-27T17:34:35.276000Zeschwellingerhttps://forge.codesys.com/u/eschwellinger/https://forge.codesys.com1cea5664ca597c862775d8e13a595ba756b36dd4

<div class="markdown_content"><p>Hi,<br/> guess this is not really CODESYS related:<br/> <a class="" href="http://www.reuk.co.uk/wordpress/raspberry-pi/connect-multiple-temperature-sensors-with-raspberry-pi/" rel="nofollow">http://www.reuk.co.uk/wordpress/raspber ... pberry-pi/</a></p> <p>BR<br/> Edwin</p></div>

2020-02-27T17:34:34.259000Z2020-02-27T17:34:34.259000Zfrancoinfhttps://forge.codesys.com/u/francoinf/https://forge.codesys.comc004a2c70a1281e37e477cf3750652f1ee5d733a

<div class="markdown_content"><p>Does anyone know how I can solve the problem?</p></div>

2020-02-27T17:34:31.423000Z2020-02-27T17:34:31.423000Zfrancoinfhttps://forge.codesys.com/u/francoinf/https://forge.codesys.comd5c511f9c0ae3ddad45483f7233639730abe3fe2

<div class="markdown_content"><p>Hi to all,<br/> my question is:<br/> I'd like to connect more than one DS18B20 temp. sensor to unipi board, controlled with raspberry pi board (the complete system is raspberri pi + unipi boards).<br/> I can connect one temp. sensor, which works perfectly.<br/> To connect multiple sensors, I have a RJ45 hub.<br/> When i connect only one sensor, I can read the sensor ID by write in raspbian: <strong>cd/sys/bus/w1/devices</strong><br/> and after: <strong>ls</strong>.<br/> But when I connect more than one temp. sensor with RJ45 hub, and I write <strong>cd/sys/bus/w1/devices</strong><br/> and after: <strong>ls</strong>, I not read the ID sensors.<br/> How can I fix the problem (how can i read the temp. sensor IDs)?<br/> Thanks, best regards.</p></div>