目录摘要...........................................................................................................................................................................2第一章 绪论...........................................................................................................................................................291.1 PCL 简介.......................................................................................................................................................291.2 PLC 的基本结构..........................................................................................................................................291.3 PLC 的工作原理..........................................................................................................................................311.4 PLC 特点......................................................................................................................................................321.5PLC 的应用领域............................................................................................................................................335.1 PLC 国内外应用发展状况......................................................................................................................35第二章 PLC 控制系统设计原则和设计步骤.....................................................................................................362.1 设计原则.......................................................................................................................................................362.2 设计步骤.......................................................................................................................................................36第三章三菱 PLC 网络化控制...............................................................................................................................383.1MELSECNET/H 网络........................................
