C++ (Qt) QModbusReply *lastRequest = modbusDevice->sendWriteRequest(writeUnit, num_device); if (lastRequest){
C++ (Qt) QModbusDataUnit writeUnit; writeUnit.setRegisterType(QModbusDataUnit::HoldingRegisters); writeUnit.setStartAddress(reg); writeUnit.setValueCount(1); writeUnit.setValue(0,data);
C++ (Qt) QModbusDataUnit writeUnit(QModbusDataUnit::HoldingRegisters, reg, 1); writeUnit.setValue(0,data);
C++ (Qt)void MainWindow::on_pushButton_write_clicked(){ write_registr(ui->spinBox_addr->value(), ui->spinBox_reg->value(), ui->spinBox_writedata->value());//ui->spinBox_writedata->value()}