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PLC網(wǎng)絡(luò)

1、信息層/Ethernet（以太網(wǎng)） 信息層為網(wǎng)絡(luò)系統(tǒng)中zui高層，主要是在PLC、設(shè)備控制器以及生產(chǎn)管理用PC之間傳輸生產(chǎn)管理信息、質(zhì)量管理信息及設(shè)備的運(yùn)轉(zhuǎn)情況等數(shù)據(jù)，信息層使用zui普遍的Ethernet。它不僅能夠連接windows系統(tǒng)的PC、UNIX系統(tǒng)的工作站等，而且還能連接各種FA設(shè)備。Q系列PLC系列的Ethernet模塊具有了日益普及的因特網(wǎng)電子郵件收發(fā)功能，使用戶無論在世界的任何地方都可以方便地收發(fā)生產(chǎn)信息郵件，構(gòu)筑遠(yuǎn)程監(jiān)視管理系統(tǒng)。同時(shí)，利用因特網(wǎng)的FTP服務(wù)器功能及MELSEC協(xié)議可以很容易的實(shí)現(xiàn)程序的上傳/下載和信息的傳輸。

2、控制層/MELSECNET/10（H）  是整個(gè)網(wǎng)絡(luò)系統(tǒng)的中間層，在是PLC、CNC等控制設(shè)備之間方便且高速地進(jìn)行處理數(shù)據(jù)互傳的控制網(wǎng)絡(luò)。作為MELSEC控制網(wǎng)絡(luò)的MELSECNET/10，以它良好的實(shí)時(shí)性、簡單的網(wǎng)絡(luò)設(shè)定、無程序的網(wǎng)絡(luò)數(shù)據(jù)共享概念，以及冗余回路等特點(diǎn)獲得了很高的市場評(píng)價(jià)，被采用的設(shè)備臺(tái)數(shù)在日本達(dá)到zui高，在世界上也是*的。而MELSECNET/H不僅繼承了MELSECNET/10優(yōu)秀的特點(diǎn)，還使網(wǎng)絡(luò)的實(shí)時(shí)性更好，數(shù)據(jù)容量更大，進(jìn)一步適應(yīng)市場的需要。但目前MELSECNET/H只有Q系列 PLC才可使用。

公司聯(lián)絡(luò)人：鄭娟萍(銷售工程師)

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3、設(shè)備層/現(xiàn)場總線CC-Link  設(shè)備層是把PLC等控制設(shè)備和傳感器以及驅(qū)動(dòng)設(shè)備連接起來的現(xiàn)場網(wǎng)絡(luò)，為整個(gè)網(wǎng)絡(luò)系統(tǒng)zui低層的網(wǎng)絡(luò)。采用CC-Link現(xiàn)場總線連接，布線數(shù)量大大減少，提高了系統(tǒng)可維護(hù)性。而且，不只是ON/OFF等開關(guān)量的數(shù)據(jù)，還可連接ID系統(tǒng)、條形碼閱讀器、變頻器、人機(jī)界面等智能化設(shè)備，從完成各種數(shù)據(jù)的通信，到終端生產(chǎn)信息的管理均可實(shí)現(xiàn)，加上對(duì)機(jī)器動(dòng)作狀態(tài)的集中管理，使維修保養(yǎng)的工作效率也大有提高。在Q系列PLC中使用，CC-Link的功能更好，而且使用更簡便。

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