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How to setup wireshark capture between two Serial Modbus Master/slave Devices? - Modbus RTU Protocol.

asked 30 Jul '15, 05:51

Narasimhan%20Ragunathan's gravatar image

Narasimhan R...
accept rate: 0%

Out of the box it can't. The usual way to monitor such traffic is to convert the serial traffic to Ethernet using a device server such as these Lantronix devices (there are other similar, cheaper, devices available). You can then use one device at each end and use a tap or switch with port mirroring (or even a hub) in between each end and then capture the traffic.

If the Modbus master is on a PC, the application can often be configured to use TCP/IP instead of serial, in this case you only need one device server at the Modbus slave end.

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answered 30 Jul '15, 07:07

grahamb's gravatar image

grahamb ♦
accept rate: 22%

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question asked: 30 Jul '15, 05:51

question was seen: 1,666 times

last updated: 30 Jul '15, 07:07

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