PLC技术的应用与发展

中文字数: 4172,中文页数:5   英文字数:  2323,页数:8

Abstract: PLC is microprocessor-based, integrated computer, communications, networking, and automatic control technology and the development of a new generation of industrial control devices. PLC in China's development and application of some 30 years of history, now it has been widely used in the national economy in all areas of industrial production, raise a traditional industrial equipment and technical capacity of key equipment and a strong pillar. With the global integration of economic development, efforts to develop PLC in China's large-scale applications, with independent intellectual property rights form the PLC technology, should be a vast number of technical personnel to the direction. PLC is an industrial environment for the design and application of digital computing operating system. It uses programmable memory storage implementation logical, sequential control, timing counts and arithmetic operations, and other operational directives, through digital and analog input and output, the mechanical movement and control of the production process. Key words: PLC； digital computing operating system 1  The definition of a programmable logic controller    Programmable logic controller, or PLC (Programmable logic Controller), refers to computer technology as the basis for the new industrial control devices. In 1987 the International Electrotechnical Commission draft standards promulgated by the PLC in the PLC to do the following definition:

摘要：可编程序控制器是以微处理器为基础，综合计算机、通信、联网以及自动控制技术而开发的新一代工业控制装置。可编程序控制器在我国的发展与应用已有30多年的历史，现在它已经广泛应用于国民经济的各个工业生产领域，成为提高传统工业装备水平和技术能力的重要设备和强大支柱。随着全球一体化经济的发展，努力发展可编程序控制器在我国的大规模应用，形成具有自主知识产权的可编程序控制器技术，应该是广大技术人员努力的方向。PLC是一种专为工业环境下应用而设计的数字运算操作系统。它采用可编程序的存储器存储执行逻辑运算、顺序控制、定时计数 及算术运算等操作指令，通过数字量、模拟量输入与输出，控制机械运动和生产过程。
关键词：可编程序控制器；数字运算操作系统
可编程控制器的定义
 可编程控制器，简称PLC（Programmable　logic　Controller）,是指以计算机技术为基础的新型工业控制装置。在1987年国际电工委员会颁布的PLC标准草案中对PLC做了如下定义：
 “PLC是一种专门为在工业环境下应用而设计的数字运算操作的电子装置。采用可以编制程序的存储器，用来在其内部存储执行逻辑运算、顺序运算、计时、计数和算术运算等操作的指令，并能通过数字式或模拟式的输入和输出，控制各种类型的机械或生产过程。PLC 及其有关的外围设备都应该按易于与工业控制系统形成一个整体，易于扩展其功能的原则而设计。”
2 PLC的特点

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