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本文根据由PC机、前置机和终端机构成的分布式微机自动化调度系统介绍其中的通讯系统,即一对多的单片机无线通讯系统的机理,具体阐述在前置机RS—232串口被与PC机通讯占用时,怎样用P1口扩充串口,并且用软、硬件相结合的方式进行调制的方法以及系统独特的自动复位技术。
In this paper, based on the distributed microcomputer automatic dispatching system composed of PC, front-end and terminal equipment, the communication system, that is the one-to-many SCM wireless communication system mechanism is introduced. PC communication takes up, how to use the P1 port to expand the serial port, and the combination of software and hardware methods for the modulation and the system’s unique automatic reset technology.