文档介绍：设计
科技论文
题目 Application of Programmable Logic Controller
系别尚德光伏学院
专业计算机控制技术
班级 0801
学生姓名
学号
指导教师蒋鹏
2010年 11 月
Application of Programmable Logic Controller
Abstract: This paper introduces the PLC's history, structure, uses, applications, characteristics and future prospects related to PLC. This can be through a corresponding understanding of the will be helpful to PLC applications .
Key words: PLC、Application、Features
Briefly
Programmable controller is the late 60s in the United States first, and then called programmable logic controller PLC (Programmable Logic Controller), aims to replace the relay in order to implement the logic to determine, timing, counting and other sequential control functions. PLC basic design idea is puter fully functional, flexible, universal and other advantages and relay control system, easy to understand, easy to operate, cheap bine the advantages of the controller hardware is standard, generic. Based on the actual application objects, the software will control the piled into the controller user program memory. Controller and the controlled object to connect easily.
As the semiconductor technology, in particular microprocessors and puter technology, to 70 after the mid, PLC has been widespread use of microprocessors as the CPU, input and output modules, and peripheral circuits are also used in large-scale Even very large scale integrated circuits, when the PLC is no longer logical to determine function, also has a data-processing, PID regulator, and munication capabilities.
Programmable controller is a puting operation of an electronic system designed for industrial environment applications. It uses a programmable memory, used in its internal memory implementation of the logical, sequential control, timing, calculation and arithmetic operations such as instruction, and through digital an inputs and outputs to control various types of mechanical or the production process. PLC is puter technology with tradition