电子测试
電子測試
전자측시
Electronic Test
2015年
22期
1-2,15
,共3页
RS-232%RS-485%电平转换器%单片机%低功耗
RS-232%RS-485%電平轉換器%單片機%低功耗
RS-232%RS-485%전평전환기%단편궤%저공모
RS-232%RS-485%level converter%single-chip%low power consumption
目前,主从式装置因具有系统能耗低、易于数据管理与维护等优势,而被广泛应用在工业控制系统中,但也因PC机的RS232接口与单片机的RS485总线的接口电平不兼容,要实现两者通信网络的链接需要进行电平转换。基于此,本文引入了一种RS485接口芯片STC11F02E,并设计了一种低成本、可靠性强、应用性能好的RS232/RS485转换器。
目前,主從式裝置因具有繫統能耗低、易于數據管理與維護等優勢,而被廣汎應用在工業控製繫統中,但也因PC機的RS232接口與單片機的RS485總線的接口電平不兼容,要實現兩者通信網絡的鏈接需要進行電平轉換。基于此,本文引入瞭一種RS485接口芯片STC11F02E,併設計瞭一種低成本、可靠性彊、應用性能好的RS232/RS485轉換器。
목전,주종식장치인구유계통능모저、역우수거관리여유호등우세,이피엄범응용재공업공제계통중,단야인PC궤적RS232접구여단편궤적RS485총선적접구전평불겸용,요실현량자통신망락적련접수요진행전평전환。기우차,본문인입료일충RS485접구심편STC11F02E,병설계료일충저성본、가고성강、응용성능호적RS232/RS485전환기。
At present, due to a low energy consumption, easy data management and maintenance, and other advantages,a master-slave device is widely used in industrial control systems,however,because the interface is not compatible with the level of the PC RS232 interface and the RS485 bus of the micro-controller,it need level conversion in order to achieve network link between them.Based on this,this paper introduced a RS485 interface chip SN75LBC184, and designed a low-cost,、good application RS232 / RS485 converter.