摘要
RS485是一种具有高抗干扰能力、适合远距离通信的串行通信方式。作者在电参数测试仪的设计中。采用自制的 RS485/RS23转换器实现了单片机和 PC 机之间的高速、远距离、高可靠的通信。文中详细叙述了单片机和 PC 机之间硬件接口电路的设计、RS485/RS232转换器的制作,以及软件设计时必须注意的一些问题。
RS485 has a high anti-interference performance and is suited for serial communication of long distance.On the design of electrical parameter's tester,we have realized high speed and reliability,long distance communication between PC and MCU,by means of special designed RS485/RS232 converter.This paper discussed in detail the hardware design of the interface circuit,the manufacture of RS485/RS232 converter,and must be note some questions during software design.
出处
《电子元器件应用》
2001年第6期30-33,共4页
Electronic Component & Device Applications
