题 目： 基于PLC的四层电梯控制系统设计
系 部： 信息技术系 专 业： 电子信息工程 学 号： 学生姓名： 指导教师姓名： 指导教师职称：
二○一○年五月八日
目 录
摘 要 ................................................................... 1 PLC-based four-story elevator control system design ...................... 2 引 言 ................................................................... 3 第一章 可编程控制器 ...................................................... 5
1.1、可编程控制器的介绍 .................................................................................................................... 5
1.1.1 定义 ...................................................................................................................................... 5 1.1.2 PLC的构成 ........................................................................................................................... 5 1.1.3 CPU的构成 ........................................................................................................................... 5 1.1.4 I/O模块 ................................................................................................................................. 6 1.1.5 电源模块............................................................................................................................... 6 1.1.8 PLC的通信联网 ................................................................................................................... 7 1.2 可编程控制器的选用 ...................................................................................................................... 7
1.2.1、PLC控制系统的I/O点数计算 ......................................................................................... 7 1.2.2 PLC的型号选择 ................................................................................................................... 8
第二章 硬件接线 .......................................................... 8
2.1 外部接线图.................................................................................................................................... 8 2.2 I/O分配图 .................................................................................................................................. 9 2.3 四层电梯模拟控制面板 ................................................................................................................ 10 第三章 系统软件设计 ..................................................... 11
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3.1 PLC梯形图概述 ............................................................................................................................. 11 3.2 MELSOFT系列GX Developer编程软件的操作方法 ............................................................. 12 3.3系统工作过程分析 ......................................................................................................................... 12 3.4 控制要求 ....................................................................................................................................... 13 3.5过程分析 ........................................................................................................................................ 13 3.6 调试过程 ....................................................................................................................................... 15
3.6.1准备工作.............................................................................................................................. 15 3.6.2调试程序.............................................................................................................................. 15
结 论 ................................................................... 17 参 考 文 献 ............................................................. 18 附件一：梯形图 .......................................................... 19 附件二：指令表 .......................................................... 24
摘 要
随着我国经济的高速发展，微电子技术、计算机技术和自动控制技术也得到了迅速发展，电梯也已成为人类现代生活中广泛使用的运输工具。随着人们对电梯运行的安全性、舒适性等要求的提高，电梯得到了快速发展，其拖动技术已经发展到了调频调压调速，其逻辑控制也由PLC代替原来的继电器控制。
可编程控制器（PLC）因为稳定可靠、结构简单、成本低廉、简单易学、功能强大和使用方便已经成为应用最广泛的通用工业控制装置，成为当代工业自动化的主要支柱之一。电梯控制要求接入设备使用简便，对应系统组态的编程简单，具有人性化的人机界面，配备应用程序库，加快编程和调试速度。通过PLC对程序设计，提高了电梯的控制水平，并改善了电梯的电梯运行的舒适感。本文争对以上优点，对电梯运行进行了改进，使其达到了比较理想的控制效果。
关键词 PLC 电梯 控制系统
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PLC-based four-story elevator control system
design
Abstract
As China's rapid economic development, micro-electronics technology, computer technology and automation technology have developed rapidly, elevators have become widely used in modern life, means of transport. As people of the elevator safety, comfort and other required improvements, elevators has been rapid development of its drag technology has developed to a FM voltage speed, its logic control is to replace the original relay by PLC control.
Programmable Logic Controller (PLC) because of stable and reliable, simple structure, low cost, easy to learn, powerful and easy to use has become the most widely used general-purpose industrial control devices, contemporary, one of the main pillars of industrial automation. Elevator control
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