描述

IC693PWR321

PLC在中國的發(fā)展
在中國，大約從1974、75年在北京和上海開始開發(fā)采用位片式微處理芯片的可編程順序控制器，并有所應用。但一直未能形成批量生產(chǎn)。在改革開放剛起步的1979年，在當時的機械部儀表局的推動下，開始從美國MODICON引進起584的PLC，并首先在電站的輔機如輸煤、除灰除渣、水處理系統(tǒng)以及水泥廠等控制系統(tǒng)中成功應用，從而大大推動了PLC在我國工業(yè)的大規(guī)模運用。遺憾的是，花了很大一筆外匯的這個項目并不曾形成良性的有后續(xù)的發(fā)展。
自1985年開始，小型PLC首先是日本三菱電機公司的MELSEC-F，通過非政府渠道進入中國市場。不到三、四年時間，小型PLC就形成了大面積的推廣應用局面。1990年以后，Siemens、Allen Bradley以及其它知名品牌開始大舉進入中國市場，占據(jù)中、大型的PLC的較大份額。1995年后形成了大型PLC以歐美為主、中型PLC歐美和日本平分秋色、小型PLC則以日本為主、Siemens也步步緊逼的格局。至今沒有很大改變。
由上簡要回顧可知， PLC在中國已經(jīng)形成了規(guī)模巨大的應用市場，但并未建立批量生產(chǎn)、有持續(xù)開發(fā)發(fā)展能力的PLC制造業(yè)。

產(chǎn)品承諾：
保?證?全新原裝進口,
保?證?安全準時發(fā)貨，
保?證售后服務質(zhì)量，
優(yōu)勢價格，大量現(xiàn)貨。

主營DCS系統(tǒng)配件
機器人系統(tǒng)配件
大型伺服系統(tǒng)配件
品牌：ABB???,AB??,GE,FOXBORO,本特利，英維思，伍德沃德，西屋，瑞恩，施耐德，西門子，摩托羅拉，安川。力士樂。ACSO，橫河等進口品牌。Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA

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