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程序控制器(Programmable Controllers以下简称PCs)是一种微处理机,它是由集成电路组成的,具有插入式输入和输出的软件程序库,可以用于检测、起动、以及控制工业装置所需要的各种顺序动作,有如传统设备上的许多继电器、线圈、开关、压力表、以及热电偶等组成的作用。因为PCs避免了开关、电线、继电器等所带来的机械-电气故障,而且又可灵活地组合成各种动作顺序,以适应少批量、多品种、多规格的柔性生产,大大地超过了继电器的功能,所以近年来在各工业先进国家的机电产品中,已经广泛被采用来代替传统的继电器等控制元件,而且进一步发展成为可控制整个自动化工厂的柔性生产过程。众所周知,在零件加工和装配式的工厂中,一台产品是由很多零件、外购件、标准件、组件等装配而
Programmable Controllers (PCs) are microprocessors, which are software libraries of integrated circuits with plug-in inputs and outputs that can be used to detect, activate, and control industrial devices A variety of actions, such as the traditional equipment, many relays, coils, switches, pressure gauges, and thermocouples and other components of the role. Because PCs avoid mechanical-electrical faults caused by switches, wires, relays, etc., they can be flexibly combined into a variety of motion sequences to accommodate less-volume, multi-variety and multi-format flexible production, greatly surpassing the relays Therefore, in recent years, the electromechanical products of various industrialized countries have been widely adopted to replace the traditional control elements such as relays and further developed into a flexible production process that can control the entire automation plant. As we all know, in parts processing and assembly factory, a product is assembled by many parts, purchased parts, standard parts, components and so on