plc外文翻譯及原文----淺談plc技術(shù)進(jìn)展情況-plc設(shè)計(已修改)
2025-06-01 18:26 本頁面
【正文】 畢 業(yè) 設(shè) 計（論 文） 外 文 文 獻(xiàn) 譯 文 及 原 文 Talks on the developmental and outlook of PLC XIA Xueming , JIA Yingbu (Northern MachElection Vocational School,Zhangjiakou 075000,China) Abstract ： With the development of corporated circuits and technique of puters,thefifthgeneration PLC has e into being Due to the advantages of stablility,reliability,cheap price ,full functions,convenient to use and easy to operate and maintenance,it has been widely the work of PLC,It will be used more widely. Key words： PLC, Development, Market, Interface 1 PLC development and the market situation The history of the development of PLC 1968 General Motors Corporation proposed to replace relay control device requirements, the next year digital equipment pany developed the first generation of programmable controller, the pany assembly line requirements. Entered the 1970s in the 20th century, with the development of microelectronics technology, particularly using microprocessor PLC, This controller is not confined to the logic of the operation, has further strengthened the functional integration, now the fifth generation of PLC products. In the 1980s to the mid1990s, the PLC is the fastestgrowing period, the annual growth rate has been maintained at 30% ~ 40%. As PLC Handling capacity and work simulation functions of the progress, DCS div
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