https://forge.codesys.com/forge/talk/CODESYS-V2/thread/bd58905ce0/2020-02-27T22:14:27.502000ZRecent posts to Read RAW CAN Message or CANbus Spy...2020-02-27T22:14:27.502000Z2020-02-27T22:14:27.502000Znurchihttps://forge.codesys.com/u/nurchi/https://forge.codesys.com820536a0afaadb6c4e85cd3e6f7154a668744f12

<div class="markdown_content"><p>Hello, everyone.</p> <p>I'm new to the world of CoDeSys, but not to Embedded programming.</p> <p>I have found some examples of using J1939 protocol, but when reading a message, it expects an address (PGN/SA is "packaged" into the address)</p> <p>My controller (TTControl, Hydac International, HY-TTC 32-CD-00-000) has dual CAN bus.</p> <p>What I need to do is program it to act as a CAN passthrough device and for certain messages change a byte or two (I need to make a joystick "pretend" to be a pedal).</p> <p>I can receive messages from particular devices (CAN ID) and can modify the message and send it on the bus, but I cannot receive a raw message (the full 29 bit ID plus up to 8 bytes of data or something close to that) so if it's not a message of interest, I could pass it through.</p> <p>I would appreciate some sample code and a library referenced.</p> <p>The CoDeSys version is 2.3</p> <p>Thanks.</p></div>