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rs485電纜制作

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Introduction to RS485 RS232 , RS422 , RS423 and RS485 are serial communication methods for computers and devices. RS232 is without doubt the best known interface, because this serial interface is implemented on almost all computers available today. But some of the other interfaces are certainly interesting because they can be used in situations where RS232 is not appropriate. We will conce

基于RS485總線照明電路系統(tǒng)設(shè)計(jì)

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本文設(shè)計(jì)一個(gè)基于RS485總線傳輸?shù)恼彰麟娐房刂葡到y(tǒng),采用STC89C52芯片作為控制處理芯片,RS485總線技術(shù)進(jìn)行主從節(jié)點(diǎn)通信,繼電器控制電路控制照明電路。通信芯片選用MAX485,成本低,傳輸距離遠(yuǎn),通信協(xié)議簡(jiǎn)單。電路設(shè)計(jì)包括一個(gè)主節(jié)點(diǎn),兩個(gè)從節(jié)點(diǎn),主要電路分為主控電路,MAX485總線接口電路,顯示電路,電源電路,繼電器控制電路等。

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