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產(chǎn)品型號(hào)6ES7952-1AK00-0AA0

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所在地區(qū)：福建廈門市

聯(lián)系人：張芳（銷售工程師）

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SIEMENS 6ES7952-1AK00-0AA0
SIEMENS 6ES7952-1AK00-0AA0
SIEMENS 6ES7952-1AK00-0AA0

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SIEMENS 6ES7952-1AK00-0AA0

為提高數(shù)據(jù)通信的整體可靠性和容錯(cuò)性，本DCS控制系統(tǒng)也采用環(huán)形的網(wǎng)絡(luò)拓補(bǔ)結(jié)構(gòu)。但是由于環(huán)形網(wǎng)本身固有的缺點(diǎn)是節(jié)點(diǎn)故障引起全網(wǎng)故障，因此數(shù)據(jù)通信鏈路的冗余技術(shù)應(yīng)運(yùn)而生。為了保證2層網(wǎng)絡(luò)的順利工作，2個(gè)網(wǎng)絡(luò)都采用1∶1的冗余設(shè)置。分布處理單元檢測(cè)到主網(wǎng)出現(xiàn)故障時(shí)，自動(dòng)放棄從主網(wǎng)的端口通信，同時(shí)啟用冗余網(wǎng)的端口，將數(shù)據(jù)轉(zhuǎn)由冗余網(wǎng)發(fā)送和接受。此時(shí)冗余網(wǎng)進(jìn)入數(shù)據(jù)通信狀態(tài)，主網(wǎng)及時(shí)進(jìn)行修補(bǔ)。雙環(huán)網(wǎng)技術(shù)實(shí)現(xiàn)了傳輸媒介的冗余，在TurboRing的基礎(chǔ)上進(jìn)一步提高了系統(tǒng)的可靠性。但雙環(huán)網(wǎng)的管理和切換都比較復(fù)雜，本系統(tǒng)采用了一種簡(jiǎn)單的方法。

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