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１、梯形圖（Ladder Diagram）程序設(shè)計(jì)語(yǔ)言?
梯形圖程序設(shè)計(jì)語(yǔ)言是用梯形圖的圖形符號(hào)來(lái)描述程序的一種程序設(shè)計(jì)語(yǔ)言。采用梯形圖程序設(shè)計(jì)語(yǔ)言，程序采用梯形圖的形式描述。這種程序設(shè)計(jì)語(yǔ)言采用因果關(guān)系來(lái)描述事件發(fā)生的條件和結(jié)果。每個(gè)梯級(jí)是一個(gè)因果關(guān)系。在梯級(jí)中，描述事件發(fā)生的條件表示在左面，事件發(fā)生的結(jié)果表示在后面。梯形圖程序設(shè)計(jì)語(yǔ)言是最常用的一種程序設(shè)計(jì)語(yǔ)言。它來(lái)源于繼電器邏輯控制系統(tǒng)的描述。在工業(yè)過程控制領(lǐng)域，電氣技術(shù)人員對(duì)繼電器邏輯控制技術(shù)較為熟悉，因此，由這種邏輯控制技術(shù)發(fā)展而來(lái)的梯形圖受到了歡迎，并得到了廣泛的應(yīng)用。?
梯形圖程序設(shè)計(jì)語(yǔ)言的特點(diǎn)是：?
?。ǎ保┡c電氣操作原理圖相對(duì)應(yīng)，具有直觀性和對(duì)應(yīng)性；
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ICS Triplex T8831 Trusted 40 Channel Analogue Input FTA
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ICS Triplex T8832 Trusted 60 Channel Analogue Input FTA
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ICS Triplex T8833 Trusted 20 Channel AI_DI FTA loop power
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ICS Triplex T8834 Trusted 20 Channel AI_DI FTA external power
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ICS Triplex T8840 Trusted 8 Channel Temperature FTA
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ICS Triplex T8841 Trusted 8 Channel RTD FTA
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ICS Triplex T8842 Trusted Versatile FTA
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ICS Triplex T8843 Trusted 40 Channel Digital Input Versatile FTA
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ICS Triplex T8844 Trusted 40 Channel Analogue Input Versatile FTA
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ICS Triplex T8845 Trusted 40 Channel Digital Output Versatile FTA
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ICS Triplex T8846 Trusted Speed Monitor Input FTA
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ICS Triplex T8846 Trusted Speed Monitor Input FTA
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ICS Triplex T8847 Trusted 40 Channel Fire Input Versatile FTA
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ICS Triplex T8855 Trusted 60 Channel Analogue Input FTA
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ICS Triplex T8870 Trusted 32 Channel 120Vdc Digital Output FTA
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ICS Triplex T8871 Trusted 16 Channel 120Vac Digital Output FTA
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ICS Triplex T8873 Trusted 16 Channel 120Vac Isolated Digital Output FTA
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ICS Triplex T8891 Trusted Speed Monitor OFTA
IC697CMM742
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