DCS系統(tǒng)由多臺計算機(jī)分別控制生產(chǎn)過程中多個控制回路，同時又可集中獲取數(shù)據(jù)、集中管理和集中控制的自動控制系統(tǒng)。分布式控制系統(tǒng)采用微處理機(jī)分別控制各個回路，而用中小型工業(yè)控制計算機(jī)或高性能的微處理機(jī)實(shí)施上一級的控制。
HVE03.1-W030N經(jīng)過多年來的不斷應(yīng)用，DCS系統(tǒng)在行業(yè)發(fā)展中的一些局限性逐步體現(xiàn)出來：
(1)1對1結(jié)構(gòu)。1臺儀表，1對傳輸線，單向傳輸1個信號。這種結(jié)構(gòu)造成接線龐雜、工程周期長、安裝費(fèi)用高、維護(hù)困難。
(2)可靠性差。模擬信號傳輸不僅精確度低，且易受干擾。為此采用各種措施提高抗干擾性和傳輸精確度，其結(jié)果是增加了成本。
(3)HVE03.1-W030N失控狀態(tài)。操作員在控制室既不了解現(xiàn)場模擬儀表的工作狀況，也不能對其進(jìn)行參數(shù)調(diào)整，更不能預(yù)測事故，導(dǎo)致操作員對其處于失控狀態(tài)。因操作員不能及時發(fā)現(xiàn)現(xiàn)場儀表故障，而發(fā)生事故已屢見不鮮。
(4)HVE03.1-W030N互操作性差。盡管模擬儀表已統(tǒng)一4～20mA信號標(biāo)準(zhǔn)，可大部分技術(shù)參數(shù)仍由制造商自定，致使不同品牌儀表無法互換。因此導(dǎo)致用戶依賴制造廠，無法使用性能價格比最優(yōu)的配套儀表，甚至出現(xiàn)個別制造商壟斷市場的局面。
dcs控制系統(tǒng)發(fā)展至今已相當(dāng)成熟和實(shí)用，毫無疑問，它仍是當(dāng)前工業(yè)自動化插入式電磁流量計。
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HVE03.1-W030N
HVE02.2-W018N
HVE03.2-W030N
HVE04.2-W075N
HVE03.2-W030L
HVE04.2-W075L
6ES5242-1AA32
6ES5243-1AA12
6ES5243-1AB11
6ES5246-4UA11
6ES5246-4UA31
6ES5247-4UA31
6ES5251-1AA11
6ES5254-4UA21
6ES5254-4UB21
6ES5255-3AA11
6ES5256-3AA11
6ES5256-3AA21
6ES5262-8MA12
6ES5263-8MA13
6ES5265-8MA01
6ES5266-8MA11
6ES5267-8MA11
6ES5281-4UB12
6ES5300-3AB11
6ES5300-5CA11
6ES5301-3AB13
6ES5301-5CA12
6ES5302-3KA11
6ES5304-3UA11
6ES5304-3UB11
6ES5305-7LA11
6ES505-7LB11
6ES5306-7LA11
6ES5308-3UA12
6ES5308-3UB11
6ES308-3UC11
6ES5310-3AB11
6ES5312-3AB11
6ES5312-3AB12
6ES5312-5AA12
6ES5312-5AA31
6ES5312-5CA11
6ES5312-5CA12
6ES5312-5CA21
6ES5312-5CA22
6ES5314-3UA11
6ES5315-8MA11
6ES5316-8MA12
6ES5318-3UA11
6ES5318-8MA12
6ES5318-8MB11
6ES5318-8MB12
6ES5318-8MB13
6ES5340-3KB11
6ES5340-3KA21
6ES5340-3KB21
6ES5340-3KB31
6ES5340-3KB42
6ES5350-3KA41
6ES5355-3UA11
6ES5370-0AA41
6ES5371-0AA51
6ES5373-0AA21
6ES5373-0AA41
6ES5373-0AA61
6ES5373-1AA41
6ES5373-1AA61
6ES5373-1AA81
6ES5374-1FH21
6ES5374-1KH21
6ES5374-2AH21
6ES5374-2FJ21
6ES5374-2KG21
6ES5374-2KH21
6ES5497-4UC11
6ES5497-4UD11
6ES5497-4UL11
6ES5497-4UL21
6ES5497-7LA11
6ES5497-8EA11
6ES5497-8MA11
6ES5498-1AA11
6ES5498-1AA21
6ES5498-1AA31
6ES5498-1AA41
6ES5498-1AA51
6ES5498-1AA61
6ES5498-1AA71
6ES5498-1AB11
6ES5511-5AA14
6ES5513-3LB11
6ES5513-3MB12
6ES5516-3UA11
6ES5521-8MA11
6ES5521-8MA21
6ES5521-8MA22
6ES5521-8MB11
6ES5521-8MB12
6ES5523-3UA11
6ES5524-3UA13
6ES5524-3UA15
6ES5525-3UA21
6ES5526-3LA22
6ES5526-3LG11
6ES5530-3LA12
6ES5530-7LA12
6ES5541-8AA11
6ES5544-3UA11
6ES5544-3UB11
6ES5552-3UA11
6ES5552-3UA21
6ES5580-0UA12
6ES5580-1UA12
6ES5580-2UA12
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