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西門子PLC模塊6

  可編程控制裝置是由現代化生產的需求而產生的，可編程序控制裝置的分

  西門子PLCS7-200系列西門子PLCS7-200系列

  類也必然要達到現代化生產的需求。

  一般來講可以從三個角度對可編程序控制裝置進行分類。其一是從可編程序控制裝置的控制規模大小去分類，其二是從可編程序控制裝置的性能高低去分類，其三是從可編程序控制裝置的結構特點去分類。

  控制規模

  一般分為大型機、中型機和小型機。

  西門子PLCS7-300系列西門子PLCS7-300系列

  小型機: 小型機的控制點一般在256點之內,適合于單機控制或小型系統的控制。

  西門子小型機有S7-200：處理速度0.8~1.2ms ；存貯器2k ；數字量248點；模擬量35路 。

  中型機:中型機的控制點一般不大于2048點,適用于對設備進行直接控制，也能對多個下一級的可編程序控制裝置進行監控，它適合中型或大型操作系統的控制。
 西門子中型機有S7-300：處理速度0.8~1.2ms ；存貯器2k ；數字量1024點；模擬量128路 ；網絡PROFIBUS；工業以太網；MPI。

  大型機：大型機的控制點一般大于2048點,不單能完成比較復雜的算術運

  西門子PLCS7-400系列西門子PLCS7-400系列

  算還能進行復雜的矩陣運算。它不單適用于對設備進行直接控制，也能對多個下一級的可編程序控制裝置進行監控。

  西門子大型機有S7-400 ：處理速度0.3ms / 1k字；

  存貯器512k ；I/O點12672；

  控制性能

  一般分為機、中檔機和低檔機。

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