西門子控制器的產(chǎn)品分類 可編程控制器是由化生產(chǎn)的需要而產(chǎn)生的，可編程序控制器的分類也必然要符合現(xiàn)代化生產(chǎn)的需求。 一般來說可以從三個角度對可編程序控制器進行分類。其一是從可編程序控制器的控制規(guī)模大小去分類，其二是從可編程序控制器的性能高低去分類，其三是從可編程序控制器的結(jié)構(gòu)特點去分類。 控制性能可以分為機、中檔機和低檔機。 低檔機：這類可編程序控制器，具有基本的控制功能和一般的運算能力。工作速度比較低，能帶的輸入和輸出模塊的數(shù)量比較少。 中檔機：這類可編程序控制器，具有較強的控制功能和較強的運算能力。它不僅能完成一般的邏輯運算，也能完成比較復(fù)雜的三角函數(shù)、指數(shù)和PID運算。工作速度比較快，能帶的輸入輸出模塊的數(shù)量也比較多，輸入和輸出模塊的種類也比較多。 機：這類可編程序控制器，具有強大的控制功能和強大的運算能力。它不僅能完成邏輯運算、三角函數(shù)運算、指數(shù)運算和PID運算，還能進行復(fù)雜的矩陣運算。工作速度很快，能帶的輸入輸出模塊的數(shù)量很多，輸入和輸出模塊的種類也很。這類可編程序控制器可以完成規(guī)模很大的控制任務(wù)。在聯(lián)網(wǎng)中一般做主站使用
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