現(xiàn)代PLC不邏輯運(yùn)算、計(jì)時(shí)、計(jì)數(shù)、順序控制等功能，還具有數(shù)字和模擬量的輸入輸出、功率驅(qū)動(dòng)、通信、人機(jī)對話、自檢、記錄顯示等功能。既可控制一臺(tái)生產(chǎn)機(jī)械、一條生產(chǎn)線，又可控制一個(gè)生產(chǎn)過程。
4.編程簡單，容易掌握
目前，大多數(shù)PLC仍采用繼電控制形式的“梯形圖編程方式”。既繼承了傳統(tǒng)控制線路的清晰直觀，又考慮到大多數(shù)工廠企業(yè)電氣技術(shù)人員的讀圖習(xí)慣及編程水平，所以非常容易接受和掌握。梯形圖語言的編程元件的符號和表達(dá)方式與繼電器控制電路原理圖相當(dāng)接近。通過閱讀PLC的用戶手冊或短期培訓(xùn)，電氣技術(shù)人員和技術(shù)工很快就能學(xué)會(huì)用梯形圖編制控制程序。同時(shí)還提供了功能圖、語句表等編程語言。
PLC在執(zhí)行梯形圖程序時(shí)，用解釋程序?qū)⑺g成匯編語言然后執(zhí)行（PLC內(nèi)部增加了解釋程序）。與直接執(zhí)行匯編語言編寫的用戶程序相比，執(zhí)行梯形圖程序的時(shí)間要長一些，但對于大多數(shù)機(jī)電控制設(shè)備來說，是微不足道的，完全可以滿足控制要求
1C31150G01 西屋模塊  現(xiàn)貨
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