In the paper , diffuse channel characteristics is studied , multiple dispersion and background noise is detailedly analyzed , based on which the network buildup and protocol structure are analyzed 在信道研究的基礎(chǔ)上,分析了無(wú)線光局域網(wǎng)的組網(wǎng)原理和協(xié)議結(jié)構(gòu)。為實(shí)現(xiàn)無(wú)線光室內(nèi)組網(wǎng)提供了解決方案。
In chapters 2 and 3 , an introduction of the architecture of profibus including its protocol structure and the three compatible composing elements dp , pa and fms , is given 在論文的第二章和第三章,我們首先介紹了profibus的體系結(jié)構(gòu),對(duì)它的協(xié)議結(jié)構(gòu)以及dp 、 pa和fms三個(gè)兼容的組成部分進(jìn)行了簡(jiǎn)要說(shuō)明。
The paper expatiates the characteristics and predominance of profibus , and analyses the protocol structure and communication principle in reference to the network structure of single master from the viewpoint of development and application . the solution is presented to realize profibus - dp , by the way of hardware and software realization 本文系統(tǒng)全面地闡述了profibus現(xiàn)場(chǎng)總線的特點(diǎn)及其優(yōu)勢(shì),從開(kāi)發(fā)與應(yīng)用的角度,參考單主站profibus - dp網(wǎng)絡(luò)的結(jié)構(gòu),詳細(xì)分析了profibus - dp的協(xié)議結(jié)構(gòu)及通信原理,并在此基礎(chǔ)上給出了profibus - dp主站的硬件、軟件實(shí)現(xiàn)方法。