XYCOM CS8500現(xiàn)貨
本公司專業(yè)銷售大型進(jìn)口各種品牌DCS系統(tǒng)模塊備件:主營(yíng)產(chǎn)品:DCS集散式控制系統(tǒng)、PLC可編程控制。
主要業(yè)務(wù): ABB DCS卡件Ovation系統(tǒng)模塊Foxboro系統(tǒng)卡件Triconex系統(tǒng)模塊
Rexroth力士樂(lè)全系列產(chǎn)品Modicon停產(chǎn)模塊 等各類工控產(chǎn)品施耐德140系列CPU,PLC
西門子6DD,6FX,6SC,6FC,6S5系列AB1746,1756,1747,1785系列PLC
GE 通用電氣 發(fā)那科
先將控制器由STOP位置旋MRES,STOP燈慢閃后將再回到STOP位置,再旋至MRES,STOP燈快閃后,回到RUN位置。 然后下裝硬件組態(tài),下裝過(guò)程中程序會(huì)將控制器置于STOP狀態(tài),正確下裝結(jié)束后會(huì)提示重新激活到RUN狀態(tài)。
3.程序的編寫:已經(jīng)建立的項(xiàng)目至少包括一個(gè)組織塊(OB1)所有的程序都要在OB1中運(yùn)行,還要建立數(shù)據(jù)塊(DB),用于定義程要用到的中間變量。為了減少OB1中的掃描時(shí)間,好是建立一些功能塊(FC),用于編寫具有獨(dú)立功能的子程序,當(dāng)然每個(gè)FC功能塊都必須在OB中運(yùn)行才有效,否則不會(huì)被執(zhí)行。在編寫程序的過(guò)程中我們除了I/O點(diǎn)之外,要調(diào)用DB塊中定義的。
3.1DB塊的建立
是在硬件組態(tài)后的畫面空白處,右鍵選中插入DB塊,為了在FC塊中能夠正確調(diào)用,要給DB塊定義符號(hào)名稱,比如在這里定義為L(zhǎng)C3201。
以一個(gè)液位測(cè)量回路為例,我們看一下要怎么在DB 塊中定義變量。變送器輸出的4-20MA的量要經(jīng)過(guò)輸入通道映像到程序中,這就是我們接收到的數(shù)據(jù),假如是個(gè)AI通道,那么它的硬件地址就是PIW288,十進(jìn)制數(shù)值范圍0-27648,是一個(gè)WORD型16位的變量,在這里我們終要將其變成一個(gè)實(shí)型變量(REAL),轉(zhuǎn)換的過(guò)程依次是先把WORD轉(zhuǎn)化成INT(16位的整型變量),然后再轉(zhuǎn)換DINT(32位的雙整型變量),再轉(zhuǎn)換為32位的REAL(實(shí)型變
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XYCOM CS8500





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