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2020-05-13 06:06:43 +0000 commented answer Decoding Modbus TCP on different port number

Thanks for the information!

2020-05-13 06:06:28 +0000 marked best answer Decoding Modbus TCP on different port number

Hi there,

great work developers and community for this great website. This has helped me numerous times in trouble shooting and learning the protocols etc.

I have a Question regarding Modbus/TCP. The default port is 502, but I have seen that some controllers can send Modbus TCP messages through a different portnumer, such as 503 for example. I have captured the these packets, but Wireshark does not decode these messages as Modbus. How can I tell/configure Wireshark to decode these messages as Modbus/TCP?

Many thanks

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2020-05-04 11:29:34 +0000 asked a question Decoding Modbus TCP on different port number

Decoding Modbus TCP on different port number Hi there, 1, great work developers and community for this great website.