D-Link DE-805TP - 10Mbps Ethernet Mini Hub User Manual download pdf (Page 56)

Modbus for Field Technicians

Page 56

7. Drill down to see the Modbus info

Before you start a capture you can specify a capture filter. The effect of the

filter is to prevent all packets being captured. Doing this can save space when

you save the log and it might make it easier to find the packets you are

interested in. However, there is some risk that you might filter out the

packets of interest.

For example, a Modbus device might not operate correctly because it is being

hammered with packets from another protocol being sent incorrectly to the

Modbus device. Our advice is to capture as much as possible and then filter

what is displayed.

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D-Link DE-805TP - 10Mbps Ethernet Mini Hub User Manual Page 56