1747-M13開(kāi)關(guān)
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(diǎn)是配置靈活,可根據(jù)需要選配不同規(guī)模的,而且裝配方便,便于擴(kuò)展和維修。大、中型PLC一般采用模塊式結(jié)構(gòu)。
還有一些PLC將整體式和模塊式的特點(diǎn)結(jié)合起來(lái),構(gòu)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(jìn)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(lèi)
根據(jù)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(yùn)算、定時(shí)、計(jì)數(shù)、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(shù)運(yùn)算、數(shù)據(jù)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(jī)控制。
(2)中檔PLC
中檔PLC除具有低檔PLC的功能外,還具有較強(qiáng)的模擬量輸入/輸出、算術(shù)運(yùn)算、數(shù)據(jù)傳送和比較、數(shù)制轉(zhuǎn)換、遠(yuǎn)程I/O、子程序及通信聯(lián)網(wǎng)等功能;有些還可增設(shè)中斷控制、PID控制等功能,適用于復(fù)雜的控制。
(3)PLC
PLC除具有中檔PLC的功能外,還了帶符號(hào)算術(shù)運(yùn)算、矩陣運(yùn)算、位邏輯運(yùn)算、平方根運(yùn)算及其他特殊功能函數(shù)的運(yùn)算、制表及表格傳送功能等。PLC具有更強(qiáng)的通信聯(lián)網(wǎng)功能,可用于大規(guī)模控制或構(gòu)成分布式網(wǎng)絡(luò)控制,進(jìn)而實(shí)現(xiàn)工廠自動(dòng)化。
產(chǎn)品介紹
一種兼容下一代產(chǎn)品的緊湊機(jī)型--這是將來(lái)控制的真正需要!
控制正在不斷地向多領(lǐng)域發(fā)展。同時(shí),自動(dòng)化機(jī)器也正快速地更加復(fù)雜。無(wú)論多么小的,構(gòu)成控制核心的可編程控制器,都強(qiáng)烈地要求、復(fù)雜的控制、較短的程序周期和較簡(jiǎn)單的。 EH-150集各種的技術(shù)于一身,例如采用具有高速計(jì)算功能的32位RISC芯片微處理器,各種應(yīng)用指令以及閃存。憑借其的性能和豐富的功能,EH-150能未來(lái)中小型控制的新需求。
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