目 录
第 1 章 引 言.........................................................................................................1
1.1 课 题 内 容........................................................................................................1
1.2 课题要求............................................................................................................2
1.3 系统工作过程....................................................................................................2
第 2 章 PLC 简介.................................................................................................3
2.1 可编程控器概述................................................................................................3
2.2 可编程控制器的定义........................................................................................3
2.3 PLC 的特点........................................................................................................3
第 3 章 基于 PLC 控制的停车场车位控制系统的设计.....................................4
3.1 控制程序流程图................................................................................................4
3.2 系统硬件电路设计............................................................................................5
3.2.1 CPU 的选择.................................................................................5
3.2.2 输入输出编址..............................................................................6
3.2.3 I/O 接线图.......................................................................................................6
..................................................................................................................................7
3.3 梯形图程序........................................................................................................7
................................................................................................................................11
3.4 停车场车位控制系统语句表..........................................................................12
结 论....................................................................................................................15
