说明：  　现在大部分的仪器设备都要求能过通过上位机软件来操作，这样方便调试，利于操作。其中就涉及到通信的过程。在实际制作的几个设备中，笔者总结出了通信程序的通用写法，包括上位机端和下位机端等
(Now most of the instruments and equipment are required to pass through PC software to operate, so convenient for debugging, which will help operations. Which will relate to communication processes. In the actual production of several devices, the author summarizes the general wording of the communication process, including PC-side and slave side, etc.)