实现上位机与下位机的通信
Realize the communication between the upper computer and the lower computer
以上为机器翻译结果，长、整句建议使用 人工翻译 。
在上位机的程序设计中，采用VB编写电机控制的操作界面，并应用RS485通信实现与下位机的数据交互。
VB programming is used to prepare the operation of motor control interface on the host computer, and apply RS485 communication programming to achieve data exchange.
再次，为整个测量系统选择了合理的通信方式，实现了下位机与子站上位机之间的串口通信。
Once again, reasonable mean of communication is selected for the all system, the serial communication of between lower computer and sub-station host computer is achieved.
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