https://forge.codesys.com/forge/talk/CODESYS-V2/thread/f6fb052596/2020-02-27T19:51:25.174000ZRecent posts to Gateway protocol2020-02-27T19:51:25.174000Z2020-02-27T19:51:25.174000Zanhellerhttps://forge.codesys.com/u/anheller/https://forge.codesys.com865def7d3c61fa525778b4008ffd1d2fc5a6b471

<div class="markdown_content"><p>Hello,</p> <p>I'm trying to understand the data exchanged via TCP/IP between Codesys V2.3 and a gateway on another Windows computer. I recorded the communication with Wireshark but can not identify the protocol.</p> <p>The TCP/IP data packets at login look like this:<br/> Codesys to the gateway: dddd0000000000000000010000000500000042ec83371d<br/> Response from the gateway: eeee00000000010000000100000000000000<br/> From the gateway message is passed on to a PCAN USB, there comes out the following:<br/> ID=0x67E, Data=0x21 0x25 0x10 0x01 0x05 0x00 0x00 0x00</p> <p>My goal is to implement an Ethernet CAN gateway on a single board computer with CAN interface (Raspi or ESP32).</p> <p>Thanks,<br/> Andy</p> <p><img alt="IMG: GatewayCommunication.PNG" rel="nofollow" src="https://forum.codesys.com//download/file.php?id=4401"/></p></div>