數(shù)控網(wǎng)絡(luò)系統(tǒng)是數(shù)控系統(tǒng)發(fā)展的趨勢，在這類系統(tǒng)中，結(jié)點之間通信的最大要求是高實時性、高可靠性，最大特點是通信數(shù)據(jù)量較小，且具有周期性。本論文將根據(jù)數(shù)控網(wǎng)絡(luò)的這些特點，詳細(xì)介紹如何在物理層，用VHDL 語言設(shè)計一個滿足這些要求的模塊，通過光纖實現(xiàn)點對點的通信。
關(guān)鍵詞：光纖通信，數(shù)控網(wǎng)絡(luò)，CNC, FPGA
Constract: CNC( Computer Numerical Controller) net is the development trend of the CNC
technology .In this kind of system ,the most important requirement of communication between
points is high real-time ,high reliability ,the biggest character is that transmited data amount is
comparatively little and transmission has periodicity .This paper will describe how to realize the fiber communication between points in the CNC net base on the CNC net character .This module is designed with VHDL language and realized with FPGA, all of the function is realized in physical layer .
Keywords: fiber communication , CNC net , CNC ,FP