https://forge.codesys.com/forge/talk/Runtime/thread/1792d4798c/2020-02-27T17:19:40.684000ZRecent posts to Raspberrypi Serial Port Connection Error2020-02-27T17:19:40.684000Z2020-02-27T17:19:40.684000ZPoncikhttps://forge.codesys.com/u/poncik/https://forge.codesys.com1d74aea9de9d5c170fe95bbd6b2ce90929fa6e63

<div class="markdown_content"><p>Hi Edwin,<br/> I think I solved problem. I think there is an error in the code that I wrote. When ı tried with yours code, serial port opened without any error. If the problem persists I will bother you again.<br/> Thank you so much<br/> Best Regards.</p></div>

2020-02-27T17:19:37.954000Z2020-02-27T17:19:37.954000ZPoncikhttps://forge.codesys.com/u/poncik/https://forge.codesys.comee068ac6ae2b1221c076392b567fa7d9b47e2693

<div class="markdown_content"><p>Hi Edwin,<br/> Thank you for fast response.</p> <p>In the morning, ı read your answer. I changed udiport value to 4 for using usb-DekTec_Digital_Video_BV device. After that port opened and ı sent some data to device. After a few attempts the device again generate error . I thought problem was from device. Changing the device did not solve the problem. The same error still occurs. Codesys can not open serial port.</p> <p>Best regards</p> <p><img alt="IMG: 7.png" rel="nofollow" src="https://forum.codesys.com//download/file.php?id=3288"/></p> <p><img alt="IMG: 6.png" rel="nofollow" src="https://forum.codesys.com//download/file.php?id=3287"/></p> <p><img alt="IMG: 5.png" rel="nofollow" src="https://forum.codesys.com//download/file.php?id=3286"/></p> <p><img alt="IMG: 4.png" rel="nofollow" src="https://forum.codesys.com//download/file.php?id=3285"/></p></div>

2020-02-27T17:19:36.977000Z2020-02-27T17:19:36.977000Zeschwellingerhttps://forge.codesys.com/u/eschwellinger/https://forge.codesys.comb1ca790b713fbcff894518db0b0beea2df12bd82

<div class="markdown_content"><p>Hi,<br/> which value has 'udiPort' in your application?</p> <p>Should be 3 for using the usb-Prolific_Technology' interface<br/> BR<br/> Edwin</p></div>

2020-02-27T17:19:34.240000Z2020-02-27T17:19:34.240000ZPoncikhttps://forge.codesys.com/u/poncik/https://forge.codesys.comae559cf14c834fc6b7226c157f6f8a8c00e858b8

<div class="markdown_content"><p>Dear all,</p> <p>I have read all the topics related to serial communication on the forum. But ı cannot open serial port to communicate with my device. </p> <p>1)I have modified the CODESYSConfig.cfg like this:</p> <p><span>[SysEthernet]</span><br/> Linux.ProtocolFilter=3</p> <p><span>[CmpSchedule]</span><br/> ProcessorLoad.Enable=1<br/> ProcessorLoad.Maximum=95<br/> ProcessorLoad.Interval=5000</p> <p><span>[SysCom]</span><br/> Linux.Devicefile=/dev/serial</p> <p>2) Add Symbolic Link to /pi folder</p> <p>#!/bin/sh<br/> # Script to start our application<br/> sudo ln -s /dev/serial/by-id/usb-Prolific_Technology_Inc.<em>USB-Serial_Controller-if00-port0 /dev/serial2<br/> sudo ln -s /dev/serial/by-id/usb-DekTec_Digital_Video_BV_DTM-3237</em>-<em>OEM_DVB-S_DVB-S2_receiver-if00 /dev/serial3<br/> sudo ln -s /dev/serial/by-id/usb-Silicon_Labs_CP2103_USB_to_UART_Bridge_Controller_PDBBRK006518-if00-port0 /dev/serial4<br/> sudo ln -s /dev/serial/by-id/usb-u-blox_AG</em>-_www.u-blox.com_u-blox_GNSS_receiver-if00 /dev/serial5<br/> sudo ln -s /dev/serial/by-id/usb-Silicon_Labs_CP2103_USB_to_UART_Bridge_Controller_0047-if00-port0 /dev/serial6</p> <p>I can not open serial port with this code. it's generate error. How can i solve this problem?</p> <p><img alt="IMG: 3.png" rel="nofollow" src="https://forum.codesys.com//download/file.php?id=3283"/></p> <p><img alt="IMG: 2.png" rel="nofollow" src="https://forum.codesys.com//download/file.php?id=3282"/></p> <p><img alt="IMG: 1.png" rel="nofollow" src="https://forum.codesys.com//download/file.php?id=3281"/></p></div>