CODESYS - the IEC 61131-3 automation software

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 Post subject: Gateway protocol
PostPosted: Mon Feb 04, 2019 1:49 pm 
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Joined: Sun Mar 20, 2016 9:04 pm
Posts: 1
Hello,

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.

The TCP/IP data packets at login look like this:
Codesys to the gateway: dddd0000000000000000010000000500000042ec83371d
Response from the gateway: eeee00000000010000000100000000000000
From the gateway message is passed on to a PCAN USB, there comes out the following:
ID=0x67E, Data=0x21 0x25 0x10 0x01 0x05 0x00 0x00 0x00

My goal is to implement an Ethernet CAN gateway on a single board computer with CAN interface (Raspi or ESP32).

Thanks,
Andy


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