SIEMENS 6ES7431-0HH00-0AB0
SIEMENS 6ES7431-0HH00-0AB0
SIEMENS 6ES7431-0HH00-0AB0
SIEMENS 6ES7431-0HH00-0AB0
網(wǎng)絡(luò)冗余
在DCS控制系統(tǒng)中至少存在2個(gè)網(wǎng)絡(luò)，一個(gè)是管理層和控制層之間的通信網(wǎng)絡(luò)，另一個(gè)是過程控制層與底層I/O卡件層之間的485通信網(wǎng)絡(luò)。上層網(wǎng)絡(luò)主要的作用是實(shí)現(xiàn)管理層對控制層實(shí)時(shí)檢測，和對下層控制器的配置設(shè)置等任務(wù)。下層網(wǎng)絡(luò)是為了把I/O卡件采集的數(shù)據(jù)傳送到過程控制層，然后把控制層的控制數(shù)據(jù)傳送給I/O卡件。這2個(gè)網(wǎng)絡(luò)在DCS控制系統(tǒng)中的重要性是不言而喻的。
針對上層網(wǎng)絡(luò)模塊的冗余，當(dāng)今的工業(yè)自動(dòng)化領(lǐng)域出現(xiàn)了各種各樣的支持鏈路冗余功能的工業(yè)以太網(wǎng)交換機(jī)，它們解決了由節(jié)點(diǎn)故障導(dǎo)致網(wǎng)絡(luò)癱瘓的問題。
廈門仲鑫航自動(dòng)化設(shè)備有限公司
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★ （請備注張芳收，謝謝?。?br />★ 業(yè)務(wù)
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★ 地址：廈門思明區(qū)湖濱東路湖光大廈8樓A
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