https://forge.codesys.com/forge/talk/Engineering/thread/5d15ade0b5/2024-08-26T18:27:38.482000ZRecent posts to Unable to Connect to Modbus RTU Device2024-08-26T18:27:38.482000Z2024-08-26T18:27:38.482000Zjp23https://forge.codesys.com/u/jp23/https://forge.codesys.com558257dd0230a7906659d46ec1613f967e263933

<div class="markdown_content"><p>Hi all,</p> <p>I am attempting to use the Control Win V3 soft PLC to control a WAGO 750-315 remote I/O system via modbus RTU communication. I am struggling to connect to the device. I have been following this tutorial:<br/> <a href="https://www.youtube.com/watch?v=YlRfkESaNds" rel="nofollow">https://www.youtube.com/watch?v=YlRfkESaNds</a></p> <p>I have setup my devices as shown in the images below. I have verified that my com port settings are correct as I am able to connect/control using modbus simulator software with these settings. I have also connected to a modbus master simulator program as instructed in the video, but the orange triangles will not go away. Additionally, I have updated my settings to 485 using the PLC shell. I have also set "always update variables" to enabled (1).</p> <p>Serial port, PCI-Bus, and modbus serial device status all show as "Not Running."</p></div>