The specific part is divided into three windows:
The window looks like this:
It recalls the type of Modbus function configured (slave).
The window looks like this:
This window displays the different counters (in slave configuration).
The Reset Counters button resets these counters to zero.
Slave Bus counter or listen only mode:
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Slave Bus: This counter is incremented by the slave when it receives a request from the master while in the process of processing another request. This happens when the master sends a request. It does not wait for a response from the slave and may send another request.
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Listen Only Mode: This is the operating mode of a slave which is only in listen mode. It never responds to frames sent by the master. In this case, this counter indicates the number of frames received by the slave.
