A03B-0819-C052

A03B-0819-C052 上世紀(jì)80年代至90年代中期，是PLC開展最快的期間，年增長(zhǎng)率一向堅(jiān)持為30-40%。在這期間，PLC在處理模仿量才干、數(shù)字運(yùn)算才干、人機(jī)接口才干和網(wǎng)絡(luò)才干得到大幅度行進(jìn)，PLC逐漸進(jìn)入進(jìn)程操控范疇，并且在某些運(yùn)用上代替了在進(jìn)程操控范疇處于操控方位的DCS體系
如今，PLC現(xiàn)已具有通用性強(qiáng)、運(yùn)用便利、習(xí)慣面廣、牢靠性高、抗干擾才干強(qiáng)、編程簡(jiǎn)略等特色。在可預(yù)見的將來(lái)，PLC在工業(yè)自動(dòng)化操控特別是次序操控中的主導(dǎo)方位，是別的操控技能無(wú)法代替的。
二、PLC的構(gòu)成
從構(gòu)造上分，PLC分為固定式和組合式（模塊式）兩種。固定式PLC包含CPU板、I/O板、顯現(xiàn)面板、內(nèi)存塊、電源等，這些元素組合成一個(gè)不行拆開的全體（如上左圖）。模塊式PLC包含CPU模塊、I/O模塊、內(nèi)存、電源模塊、底板或機(jī)架，這些模塊能夠依照必定規(guī)則組合裝備（如上右圖）。

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DOBOTECH DQM CARD REL.1.0  0310071 1
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