SD832開關全新
種功能模塊。模塊式PLC由框架或基板和各種模塊組成,模塊裝在框架或基板的插座上,如圖所示。這種模塊式PLC的特點是配置靈活,可根據需要選配不同規(guī)模的,而且裝配方便,便于擴展和維修。大、中型PLC一般采用模塊式結構。
還有一些PLC將整體式和模塊式的特點結合起來,構成所謂的疊裝式PLC。疊裝式PLC的CPU、電源、I/O接口等也是各自的模塊,但它們之間是靠電纜進行連接的,并且各模塊可以一層層地疊裝。這樣,不但可以靈活配置,還可做得體積小巧。
2.2.按功能分類
根據PLC的功能不同,可將PLC分為低檔、中檔、。
(1)低檔PLC
低檔PLC具有邏輯運算、定時、計數、移位以及自診斷、監(jiān)控等基本功能,還可有少量模擬量輸入/輸出、算術運算、數據傳送和比較及通信等功能,主要用于邏輯控制、順序控制或少量模擬量控制的單機控制。
(2)中檔PLC
中檔PLC除具有低檔PLC的功能外,還具有較強的模擬量輸入/輸出、算術運算、數據傳送和比較、數制轉換、遠程I/O、子程序及通信聯網等功能;有些還可增設中斷控制、PID控制等功能,適用于復雜的控制。
(3)PLC
PLC除具有中檔PLC的功能外,還了帶符號算術運算、矩陣運算、位邏輯運算、平方根運算及其他特殊功能函數的運算、制表及表格傳送功能等。PLC具有更強的通信聯網功能,可用于大規(guī)??刂苹驑嫵煞植际骄W絡控制,進而實現工廠自動化。
產品介紹
一種兼容下一代產品的緊湊機型--這是將來控制的真正需要!
控制正在不斷地向多領域發(fā)展。同時,自動化機器也正快速地更加復雜。無論多么小的,構成控制核心的可編程控制器,都強烈地要求、復雜的控制、較短的程序周期和較簡單的。 EH-150集各種的技術于一身,例如采用具有高速計算功能的32位RISC芯片微處理器,各種應用指令以及閃存。憑借其的性能和豐富的功能,EH-150能未來中小型控制的新需求。
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