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程序編輯器是最主要的程序編寫區域，利用工具欄按鈕還可以方便快捷的執行常用的編程和調試操作；符號表可以為常量和存儲器地址符號名稱，提高程序的可讀性，這些符號使用于程序的全局范圍；變量表中定義的符號是對特定的POU有效的局部變量；狀態圖表可以在程序下載到PLC后用來采集信息，可以用圖表和趨勢曲線兩種形式監控和調試程序；交叉引用標識在程序中使用的所有操作數，便于了解程序中使用的存儲器使用情況。

通過數據塊可以向微存儲器地址分配初始數據值；輸出窗口可以在編譯程序時輸出編譯信息，如程序塊和數據塊的大小、編譯錯誤等；狀態條給出了程序編輯器中的光標位置，以及S7-200 SMART PLC的連接狀態。

上世紀九十年代走向實用化的現場總線操控體系,正以迅的氣勢快速開展,是現在世界上式的操控體系現場線操控體系是現在自動化技能中的一個熱門,正受到國內外自動化設備制造商與用戶越來越激的關注現場總線操控體系的現,將給動化領域帶來又一次革新,其深度和廣度將超過前史的任何一次,從而開創自動化的新元在有些職業,FCS是由PLC開層而來的;而在另一些職業,FCS是由DCS開而來的,以FCS與c及CS之間有千絲萬縷的聯系。又存在瓣本質的差異,本就PLC、DCS、FCS三大操控體系的特色和差逐一分析,指出它們之間的淵源及開展方向

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