Unsolved Read command
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Hi,
I'm studying Modbus server example. I need to captare the read command of modbus master, but I don't understand how I can do it. I need to do this because I have to discriminate the write command from the read command. The qt example doesn't show how do this. I saw that there is a writen signal about client write command, but there isn't a read signal. I'm working with qt 5.8.Can someone help me, please?
Many thanks in advance.
Best regards,
Chobin -
@Chobin
although I'm not familiar with modbus.
but isn'tdataWritten
signal enough to discriminate read and write request?or you have some reason that you need to know the client sends a read request?
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Hi,
I need to know when the client sends a read request because in this situation I have to cancel some parameters.
If I set a breakpoint in the dataWritten signal handler: the software stops there when the client sends a write request, but when it sends a read request the software doesn't stop so I can't implement anything.
I don't understood if it's possible to create an object to read the request type.
Please, help me.
Thank you,
Chobin
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@Chobin
I think maybe subclassQModbuServer
and reimpliment QModbusServer::processRequest or QModbusServer::processPrivateRequest can meet your need