基于PLC的自动药片装瓶控制论文.doc

毕业设计(论文)报告
题目:基于PLC的自动药片装瓶控制
摘要
PLC可编程序控制器其实质是一种专用于工业控制的计算机,其硬件结构基本上与微型计算机相同。它采用一类可编程的存储器,用于其内部存储程序,执行逻辑运算、顺序控制、定时、计数与算术操作等面向用户的指令,并通过数字或模拟式输入/输出控制各种类型的机械或生产过程。
在现今医药行业中,自动装瓶机得到了广泛应用,它由PLC通过USS通信协议直接控制电动机。不仅能够实现对装药机方式运行的控制,而且能够根据需要灵活控制装药时间,达到节约电能,降低成本,提高生产效率等目的。PLC特有的I/O指示功能以及简便的PLC控制硬接线使得查找故障点十分迅速、方便。PLC主机工作可靠,本身故障率很低。所以,本文采用PLC设计装瓶机控制系统。
关键词:工业控制系统, PLC , 自动装瓶机
Abstract
PLC programmable controller and its essence is a kind of special for industrial puter, and its hardware structure is basically the same with puter. It adopts a kind of programmable memory, for its internal storage procedures, the implementation of logical, sequential control, timing, counting and arithmetic operations such as user-oriented instructions, and through digital or analog input / output control various types of machinery or production process.
In today's pharmaceutical industry, automatic bottling machine has been widely used, it from the PLC through the munication protocol to control the motor directly. Not only can realize the charging machine operation control, and can flexibly control the charge time, save energy, reduce costs, improve production efficiency and other purposes. PLC special I / O indication function and simple PLC control hard wiring that find the point of failure is very rapid, convenient. PLC host work reliability, failure rate is very low. Therefore, this paper uses PLC to design a bottling machine control system.
Key words: industrial control system, PLC, automatic bottling machine
目录
前言............................................................3
第一章 PLC的基本知识............................................4
PLC发展历史..............................................4
PLC的基本结构............................................5
PLC的工作原理…………………………………………………………8
PLC内部运作方式………………………………………………………9
PLC的特点………………………………………………………………9
PLC发展新动向…………………………………………………………9
PLC就业前景………………………………………………………….10
PLC程序设计方法…………………………………………………….10
第二章三菱系列PLC