目 录

  

摘 要

 

                                                                                                                

 

 

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 3

  

PLC-based four-story elevator control system design

 

                                      

 

 

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 4

  

  

引 言

 

                                                                                                                

 

 

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 5

  

 

第一章 可编程控制器

 

                                                                                          

 

 

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 7

  

1.1

   、可编程控制器的介绍

 

                                                                                                                      

 

 

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 7  

1.1.1 

 

 定义

 

                                                                                                                                           

 

 

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 7  

1.1.2 PLC

 

     的构成

 

                                                                                                                               

 

 

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 7  

1.2 

   可编程控制器的选用

 

                                                                                                                        

 

 

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 10

   

1.2.1

 

 、

   PLC

 

     控制系统的

 

 

    I/O

       点数计算

 

                                                                                          

 

 

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 10

   

1.2.2 PLC

 

     的型号选择

 

                                                                                                                     

 

 

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 11

   

 

第二章 硬件接线

 

                                                                                               

 

 

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 11

   

2.1  

 

 外部接线图

 

                                                                                                                                       

 

 

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 11

   

I/O

       分配图

 

                                                                                                                                                

 

 

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 12

   

2.3 

   四层电梯模拟控制面板

 

                                                                                                                   

 

 

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 13

   

 

第三章 系统软件设计

 

                                                                                        

 

 

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 14

   

3.1 PLC

 

     梯形图概述

 

                                                                                                                                

 

 

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 14

   

3.2  MELSOFT

 

     系列

 

 

    GX Developer

 

     编程软件的操作方法

 

                                                                  

 

 

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 15

   

3.3

       系统工作过程分析

 

                                                                                                                            

 

 

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 16

   

3.4 

   控制要求

 

                                                                                                                                            

 

 

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 16

   

3.5

       过程分析

 

                                                                                                                                            

 

 

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 17

   

3.6 

   

 

调试过程

 

                                                                                                                                           

 

 

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 19

   

3.6.1

 

     准备工作

 

                                                                                                                                 

 

 

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 19

   

3.6.2

 

     调试程序

 

                                                                                                                                 

 

 

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 19

   

 

结 论

 

                                                                                                               

 

 

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 21

   

     

参 考 文 献

 

                                                                                                       

 

 

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 22

   

附件一：梯形图

 

                                                                                                

 

 

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 23

   

附件二：指令表

 

                                                                                                

 

 

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 28

   

2