https://forge.codesys.com/forge/talk/Engineering/thread/bebf5d63f4/2020-02-27T13:48:08.172000ZRecent posts to Offset Modbusverbindung2020-02-27T13:48:08.172000Z2020-02-27T13:48:08.172000ZAnonymoushttps://forge.codesys.com/u/*anonymous/https://forge.codesys.com2772e6127b417a44b084af82bc18d5e59d57e564

<div class="markdown_content"><p><em>Originally created by:</em> ph0010421</p> <p>When you have brought in the ModbusMaster, the IoDrvModbus library is automatically used.<br/> In here is an FB <strong>ModbusRequest</strong> which lets you choose the slave, function code and offset/size of data.<br/> I'm never too sure of the best way to get the <strong>hComPort</strong> parameter...maybe you'll find it </p></div>

2020-02-27T13:48:08.118000Z2020-02-27T13:48:08.118000ZdFxhttps://forge.codesys.com/u/dfx/https://forge.codesys.comc1f9747211a3d8988cffdd09b1d1b897e773a09a

<div class="markdown_content"><p>Serialcom lib allows you to code every read/write and port open/close.<br/> The scanner is simpler and easier because it does this automatically. But it's less flexible.</p></div>

2020-02-27T13:48:08.064000Z2020-02-27T13:48:08.064000ZGEEHhttps://forge.codesys.com/u/geeh/https://forge.codesys.comc254eb522a18efcb3bdfbcb62e0a672570279410

<div class="markdown_content"><p>how should that work with the CAA SerialCom lib?<br/> How can I change the offset of the Modbus connection?</p></div>

2020-02-27T13:48:08.006000Z2020-02-27T13:48:08.006000ZdFxhttps://forge.codesys.com/u/dfx/https://forge.codesys.com789e7b46c63524178ec78411e4479b3bbc4ddd63

<div class="markdown_content"><p>I would not use the scanner for this.</p> <p>Use CAA SerialCom lib. <a class="" href="https://help.codesys.com/webapp/idx-CAA_SerialCom-lib;product=CAA_SerialCom;version=3.5.12.0" rel="nofollow">https://help.codesys.com/webapp/idx-CAA_SerialCom-lib;product=CAA_SerialCom;version=3.5.12.0</a></p></div>

2020-02-27T13:48:07.945000Z2020-02-27T13:48:07.945000ZGEEHhttps://forge.codesys.com/u/geeh/https://forge.codesys.comac2939d9a1c82b38444adc637eeb5e1351c997bf

<div class="markdown_content"><p>Hallo,</p> <p>ich habe eine CODESYS anwendung , in der ich bei einer Modbusverbindung den "Write Offset" programmatisch ändern möchte z.B über eine WebVisu.<br/> Hat einer eine Idee, wie das funktionieren könnte?</p> <p>Gruß Georg</p> <p>XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX</p> <p>Hello,</p> <p>I have a CODESYS application in which I want to programmatically change the "Write Offset" in a Modbus connection, for example via a WebVisu.<br/> Does anyone have an idea how this could work?</p> <p>Greeting Georg</p> <p><img alt="IMG: Modbusverbindung_Offset.JPG" rel="nofollow" src="https://forum.codesys.com//download/file.php?id=4482"/></p></div>