Problem about QModbusClient: read file record(0x14)

Ehehe

I want to write a host software to read file by modbus protocol, used the read file record function code(0x14), encode the QModbusRequest and use QModbusClient::readRawRequest(), the reply has no error, but has no data .

The send code

char data0[] = {0x0e, 0x06, 0x00, 0x04, 0x00, 0x01, 0x00, 0x02, 0x06, 0x00, 0x03, 0x00, 0x09, 0x00, 0x02};
QByteArray data(data0, 15);
QModbusRequest req1(QModbusRequest::ReadFileRecord, data);
rep = mb_client->sendRawRequest(req1, 1);
if (rep->isFinished()) {
    delete rep;
}
else {
    connect(rep, &QModbusReply::finished, this, &MyClass::on_rep_finish);
}

And the receive code

void MyClass::on_rep_finish()
{
    QModbusReply *reply = qobject_cast(sender());
    if (!reply) {
        return;
    }
    if (reply->error() == QModbusDevice::NoError) {
        const QModbusDataUnit unit = reply->result();
        QString str;
        auto values = unit.values();
        for (uint i = 0; i < unit.valueCount(); i++) {
            str += QString::number(unit.value(i)) + " ";
        }
        QMessageBox::about(this, "recv", str + QString::number(unit.valueCount()));
    }
    else {
        QMessageBox::about(this, "recv", reply->errorString());
    }
    delete reply;
}

I use the tcp/ip tool to creat a tcp server, receive this frame (hex):
00 00 00 00 00 11 01 14 0E 06 00 04 00 01 00 02 06 00 03 00 09 00 02
and response this frame (hex):
00 00 00 00 00 0F 01 14 0C 05 06 0D FE 00 20 05 06 33 CD 00 40

The frame as same as show in *MODBUS APPLICATION PROTOCOL SPECIFICATION V1.1b3* chapter 6.14, in order to avoid message error.

However the program show this message box:

The message box only show '0', the str is empty.

Why?Can anybody help me, thanks!

AlexSveshn68

I have the same issue with Modbus RTU. Does anybody knows the solvation of this problem?