介绍了主从式微机监测系统主机与多台从机通讯的一种新方法，给出了其硬、软件柜图。新通讯方法的基本思想是，每台从机只用二根线（发送线、地线）与主机相连，用从机发送每组数据之间的足够长的延时来保证主机与从机问的同步关系，采用奇偶校验来区别地址数据与测量数据。其系统具有结构简单、调试方便、工作可靠等优点，已成功地应用于实际现场。 A new method of communication between host computer and multiple slave computers is introduced, and the hardware and software cabinet diagrams are given. The basic idea of ​​the new communication method is that each slave uses only two wires (transmission line, ground) connected to the host, using the slave to send a long enough delay between each set of data to ensure that the host and slave The synchronization relationship, the use of parity to distinguish between address data and measurement data. The system has the advantages of simple structure, convenient debugging and reliable work, and has been successfully applied to the actual scene.