I try to developing simple scada system with C++ in Qt. I want to control hardware or get status(or something) of hardware and send to server or router.(actually my application control softwares too)
And in finish: Qt have a good tools for scada systems?
As of QT 5.7 there is a new Serial Bus library for use with protocols such as CAN BUS and MODBUS, you can read more about it here:
http://doc.qt.io/qt-5/qtserialbus-index.html
For your scenario, QT has plenty of Network support that you could use for your interface, depending on what your hardware specification is. QT does not compare to 'out of the box' SCADA solutions such as a Siemens SCADA system, however developing one based on QT could give you much more flexibility. Depending on what you are trying to achieve, this becomes a trade-off between productivity/time to market and flexibility/value add.