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PLC programming language standards, it modern software and the concept of the modern software engineering with the traditional mechanism of PLC programming language successfully integrated, it industrial control in the affected areas beyond the limits PLC, as DCS, PC control, motion control, the programming and SCADA system the de facto standard. This paper reviews the success of the standard reasons, the advantages and shortcomings, the current and future development and application activities.
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工控编程语言IEC 61131.doc