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1、現(xiàn)場總線對傳統(tǒng)dcs的沖擊
　　R88D-UA04V現(xiàn)場總線對傳統(tǒng)dcs的沖擊來源于其本質(zhì)上優(yōu)越于dcs系統(tǒng)的技術(shù)特征。根據(jù)國際電工委員會IEC和現(xiàn)場總線基金會FF的定義，現(xiàn)場總線技術(shù)具有以下5個主要特點：
　?、贁?shù)字信號完全取代4-20mA模擬信號；
　?、谑够具^程控制、報警和計算功能等完全分布在現(xiàn)場完成；
　?、凼乖O(shè)備增加非控制信息，如自診斷信息、組態(tài)信息以及補償信息等；
　?、軐崿F(xiàn)現(xiàn)場管理和控制的統(tǒng)一；
　?、菡嬲龑崿F(xiàn)系統(tǒng)開放性、互操作性。
　　R88D-UA04V現(xiàn)場總線技術(shù)不僅是一種通信技術(shù)，它實際上融人了智能化儀表、計算機網(wǎng)絡(luò)和開放系統(tǒng)互連(OSI)等技術(shù)的精粹。所有這些特點使得以現(xiàn)場總線技術(shù)為基礎(chǔ)的現(xiàn)場總線控制系統(tǒng)(FCS)相對于傳統(tǒng)dcs系統(tǒng)具有巨大的優(yōu)越性：
　　①系統(tǒng)結(jié)構(gòu)大大簡化，成本顯著降低；
　?、诂F(xiàn)場設(shè)備自治性加強，系統(tǒng)性能全面提高；
　　③提高了信號傳輸?shù)目煽啃院途龋?br /> 　?、躌88D-UA04V真正實現(xiàn)全分散、全數(shù)字化的控制網(wǎng)絡(luò)；
　?、萦脩羰冀K擁有系統(tǒng)集成權(quán)。
　　這些優(yōu)越性可從dcs和現(xiàn)場總線系統(tǒng)的網(wǎng)絡(luò)結(jié)構(gòu)比較后得到驗證。

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 R88D-UA04V
R88D-UA08HA AC200V 200W
R88D-UA08V
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R88D-UA12HA AC200V 400W
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R88D-UA20HA AC200V 750W
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R88D-UP02HA AC200V 30W
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R88D-UP20HA AC200V 750W
R88D-UT120H AC200V 5.0KW
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