https://forge.codesys.com/forge/talk/Engineering/thread/7d62a7b2f5/2020-02-27T14:18:34.224000ZRecent posts to ModbusTCP master-slave Raspberry2020-02-27T14:18:34.224000Z2020-02-27T14:18:34.224000ZThKhttps://forge.codesys.com/u/thk/https://forge.codesys.com6a4ae2ad3d8000acf74cba72845394e632d2993b

<div class="markdown_content"><p>Dear Mr. Burger,<br/> you will find the reason in the error codes.</p> <p>BR<br/> ThK</p> <p><img alt="IMG: ModbusErrorCode.png" rel="nofollow" src="https://forum.codesys.com//download/file.php?id=4469"/></p></div>

2020-02-27T14:18:33.845000Z2020-02-27T14:18:33.845000Zburgerhttps://forge.codesys.com/u/burger/https://forge.codesys.com2ba91386ed47285499757ad2906aa0828271a4d5

<div class="markdown_content"><p>Hello!</p> <p>I have Raspberry PI3 as ModbusTCP Master and 4 devices wich are Modbus slave. I have managed to communicate with them, but somewhere this communication has stop working. If I test Modbus communication to these 4 devices it is working OK (tested with Modscan) but with Raspberry it is not working and I can not find the problem. I have tryed with only one device, but the problem is the same; Keep getting warning Bus is not running (it is running, because i tested it).</p> <p>Her is my test program from Dropbox</p> <p><a class="" href="https://www.dropbox.com/s/z5na72bn3433too/TEST_FRM_MODBUS.rar?dl=0" rel="nofollow">https://www.dropbox.com/s/z5na72bn3433t ... S.rar?dl=0</a></p> <p>Best regards</p></div>