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FOXBOROP0971WV詢億佳就購
通訊口已經(jīng)設置完畢，下面就是如何根據(jù)要求將數(shù)據(jù)發(fā)送給變頻器。
對FX2系列的PLC與上拉機的通信實現(xiàn)，提出了一種價格低、體積小的接口方案，討論了其硬件和軟件的設計思想，該接口裝置與控制室和實驗室環(huán)境下運行可靠。
關鍵詞：上位機通信接口可編程控制器
PLC作為一種高能的控制裝置，在分布式系統(tǒng)中得到了越來越廣泛的應用。在這種控制方式中，上位機系統(tǒng)是其中重要的組成部分。PLC可以多種方式如直接采用現(xiàn)有的組態(tài)軟件與上位監(jiān)迭機通信，但針對小規(guī)模的控制系統(tǒng)，找到一種高能價格比的通信方法，
1通信裝置的硬件描述
之間實現(xiàn)通道，可使二者互補功能上的不足，PLC用于控制方面既方便又可靠，而PC機在圖形顯示、數(shù)據(jù)處理、打印報表以及中文顯示等方面有很強的功能。因此，各PLC制造廠家紛紛開發(fā)了適用于本公司的各種型號PLC與PC機通信的接口模塊。三菱公司開發(fā)的FX-232AW接口模塊用于FX2系列PLC與計算機通信。還有與以太網(wǎng)連接的接口模塊AJ71E71、與MAP網(wǎng)連接的接口模塊AJ71M51-S1、與FAIS MAP網(wǎng)連接的接口模塊AJ71M51M1等。不同的通信方式，有著不同的成本價格和不同的適用范圍。在此介紹一種通過PC機的RS-232口與PLC進行通信的實現(xiàn)方法。
FX2系列PLC的編程接口采用RS-422標準，而計算機的串行口采用RS-232標準。因此，作為實現(xiàn)PLC計算機通信的接口電路，必須將RS-422標準轉(zhuǎn)換成RS-232標準。
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通訊口已經(jīng)設置完畢，下面就是如何根據(jù)要求將數(shù)據(jù)發(fā)送給變頻器。
對FX2系列的PLC與上拉機的通信實現(xiàn)，提出了一種價格低、體積小的接口方案，討論了其硬件和軟件的設計思想，該接口裝置與控制室和實驗室環(huán)境下運行可靠。
關鍵詞：上位機通信接口可編程控制器
PLC作為一種高能的控制裝置，在分布式系統(tǒng)中得到了越來越廣泛的應用。在這種控制方式中，上位機系統(tǒng)是其中重要的組成部分。PLC可以多種方式如直接采用現(xiàn)有的組態(tài)軟件與上位監(jiān)迭機通信，但針對小規(guī)模的控制系統(tǒng)，找到一種高能價格比的通信方法，
1通信裝置的硬件描述
之間實現(xiàn)通道，可使二者互補功能上的不足，PLC用于控制方面既方便又可靠，而PC機在圖形顯示、數(shù)據(jù)處理、打印報表以及中文顯示等方面有很強的功能。因此，各PLC制造廠家紛紛開發(fā)了適用于本公司的各種型號PLC與PC機通信的接口模塊。三菱公司開發(fā)的FX-232AW接口模塊用于FX2系列PLC與計算機通信。還有與以太網(wǎng)連接的接口模塊AJ71E71、與MAP網(wǎng)連接的接口模塊AJ71M51-S1、與FAIS MAP網(wǎng)連接的接口模塊AJ71M51M1等。不同的通信方式，有著不同的成本價格和不同的適用范圍。在此介紹一種通過PC機的RS-232口與PLC進行通信的實現(xiàn)方法。
FX2系列PLC的編程接口采用RS-422標準，而計算機的串行口采用RS-232標準。因此，作為實現(xiàn)PLC計算機通信的接口電路，必須將RS-422標準轉(zhuǎn)換成RS-232標準。
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