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可编程序控制器(以下简称可编机)是近年来吸取了工业系统中采用顺序控制器和计算机控制的实践经验,综合其优缺点,研制出的一种新型自动化控制装置。它比完全用硬件实现条件步进控制的顺序控制器要灵活方便、简单经济、功能全面得多。它采用了计算机的基本结构和控制原理,用指令编程实现控制,而指令主要是根据对象工艺流程制定的。这样,它的使用就比计算机简单,易于掌握。它主要是完成开关量的逻辑控制,根据对象来的开关点的开断情况,进行逻辑条件判断再反馈回去实现输出点的开断控制,从而实现对生产过程的监视与控制。它特别适合于那些多开关量的庞大复杂对象和多机并行需要群控的对
In recent years, programmable logic controller (hereinafter referred to as programmable machine) is a new type of automatic control device developed by combining the practical experience of using sequence controller and computer control in industrial systems in recent years. It is more flexible and convenient than simple control of sequence controllers with hardware-implemented conditional stepping, simple and economical, and much more versatile. It uses the basic structure of the computer and control theory, with the instruction programming to achieve control, and instructions are mainly based on the object process developed. In this way, its use than the computer is simple and easy to grasp. It is mainly to complete the logical control of the switch, according to the object to the switching point of the breaking situation, the logical conditions to judge and then fed back to achieve the output point of the breaking control, in order to achieve the production process monitoring and control. It is particularly suitable for those complex multi-switch complex objects and multi-machine parallel group control of the need to