SST-PB3-CLX-RLL【】SST-PB3-CLX-RLL
SST-PB3-CLX-RLL【】SST-PB3-CLX-RLLplc的編程語言與一般計算機語言相比，具有明顯的特點，它既不同于高級語言，也不同與一般的匯編語言，它既要滿足易于編寫，又要滿足易于調(diào)試的要求。目前，還沒有一種對各廠家產(chǎn)品都能兼容的編程語言。如三菱公司的產(chǎn)品有它自己的編程語言，OMRON公司的產(chǎn)品也有它自己的語言。但不管什么型號的 PLC，其編程語言都具有以下特點：
1、圖形式指令結(jié)構(gòu)：程序由圖形方式表達(dá)，指令由不同的圖形符號組成，易于理解和記憶。系統(tǒng)的軟件開發(fā)者已把工業(yè)控制中所需的獨立運算功能編制成象征性圖形，用戶根據(jù)自己的需要把這些圖形進(jìn)行組合，并填入適當(dāng)?shù)膮?shù)。在邏輯運算部分，幾乎所有的廠家都采用類似于繼電器控制電路的梯形圖，很容易接受。如西門子公司還采用控制系統(tǒng)流程圖來表示，它沿用二進(jìn)制邏輯元件圖形符號來表達(dá)控制關(guān)系，很直觀易懂。較復(fù)雜的算術(shù)運算、定時計數(shù)等，一般也參照梯形圖或邏輯元件圖給予表示，雖然象征性不如邏輯運算部分，也受用戶歡迎~~~~~~~~~~~~~~~~~~~~~~~~~~~~
公司 名稱：廈門泰尼電氣有限公司
固定 電話：0592-6809819
聯(lián) 系 人：張亮
傳 真：0592-6890859【請備注“張亮”收】
商 務(wù) Q Q： 2314094943
手 機：18030028083
Q Q 郵 箱：2314094943@qq.com
需要可以聯(lián)系絕對給你滿意的價格
公司地址：廈門市海滄區(qū)海滄街道濱湖一里7號2008室
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2、明確的變量常數(shù)：圖形符相當(dāng)于操作碼，規(guī)定了運算功能，操作數(shù)由用戶填人，如：K400，T120等。PLC中的變量和常數(shù)以及其取值范圍有明確規(guī)定，由
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