IVBH25CA-NWKL-29-SC
IVBH25CA-NWKL-29-SC
廈門興銳達(dá)自動(dòng)化設(shè)備有限公司 http://www.xrdzidonghua.com
IVBH25CA-NWKL-29-SC在工藝操作中,為了便于生產(chǎn)調(diào)度,操作人員記錄的是膠罐容積而不是液位百分?jǐn)?shù)。原來(lái)操作人員都是根據(jù)儀表的百分讀數(shù)查對(duì)照表來(lái)?yè)Q算膠罐容積,DCS提供的折線函數(shù)十分容易地解決了這個(gè)問題。JX-300X DCS有兩種折線運(yùn)算方法。一種是首先在自定義折線函數(shù)中定義自定義折線函數(shù),然后在模擬輸入點(diǎn)設(shè)置組態(tài)時(shí)選中所需的自定義函數(shù)即可;另一種方法是利用SCX編程語(yǔ)言提供的折線運(yùn)算功能實(shí)現(xiàn)。前一種方法只能提供折線運(yùn)算后的數(shù)據(jù),而不能提供原始數(shù)據(jù)(液位百分?jǐn)?shù)),不利于和現(xiàn)場(chǎng)變送器對(duì)照,因此采用SCX編程語(yǔ)言實(shí)現(xiàn)膠罐容積的顯示。為此,要建一個(gè)自定義兩字節(jié)變量顯示膠罐容積,用模擬輸入點(diǎn)顯示液位百分?jǐn)?shù),兩者用SCX編程語(yǔ)言的折線運(yùn)算功能進(jìn)行轉(zhuǎn)換?! ?br /> 需要指出的是,JX-300X DCS的各種運(yùn)算都是對(duì)量程的百分?jǐn)?shù)進(jìn)行計(jì)算的。如液位80%,算法為0.8而不是80,工業(yè)量程的轉(zhuǎn)換由點(diǎn)本身來(lái)實(shí)現(xiàn)。
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