目 录 摘要.....................................................................................................................21 前言..................................................................................................................22 LOGO！可编程逻辑控制模块.......................................................................32.1 概述..............................................................32.2 LOGO!硬件.........................................................42.3 LOGO!系统 I/O 配置.................................................62.4 软件编程..........................................................72.4.1 编程界面......................................................72.4.2 LOGO!编程基础................................................102.4.3 常量和连接器-Co..............................................132.5 编程方法.........................................................162.5.1 功能块图法（FBD）............................................162.5.2 梯形图法（LAD）..............................................163 设计方案与要求............................................................................................174 系统硬件的设计............................................................................................175 系统的软件设计............................................................................................185.1 程序模块的设计...................................................185.1.1 双路检测报警模块.............................................195.1.2 显示报警线路模块.............................................195.1.3 声光同步报警模块.............................................205.1.4 可键盘控制报警器模块.........................................205.2 软件仿真结果.....................................................215.2.1 控制功能仿真.................................................225.2.2 程序验证.....................................................23结 论.................................
