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Tapping Modbus/TCP traffic
Tapping Modbus/TCP traffic on Ethernet requires different technique than when using serial networks.
By Rob Hulsebos on 29 October, 2017 - 10:22 am
2 out of 2 members thought this post was helpful...

When working with Modbus/TCP there is sometimes a need to tap the network traffic. On Ethernet, this is more difficult in comparison to serial networks (RS232/RS485) due to the switched architecture of Ethernet. But it is not impossible, various techniques exist to help you here, each with its own advantages and disadvantages.

I have written a non-commercial article about it to help you determine the best way to do this. For the PDF, please visit:

www.linkedin.com/pulse/tapping-industrial-ethernet-traffic-rob-hulsebos/