通过异步扩展芯片TL16C554实现了扩展4路串口，并完成4路信号的实时接收和发送，实现了集中器与4个子机的远距离通信；
In this paper, four serial ports were expanded by TL16C554 and remote communication between repeaters and four slaves was realized.
本文主要研究了SCADA系统中远动通信和子站内部通信的实现，以及通信子系统串口及单元组态的实现。
This dissertation studies the realization of communication in SCADA, and actualizes configuration of communication COM and unit.
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.
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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