机电一体化毕业设计（论文）-全自动洗衣机的plc控制

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1、中文摘要根据全自动洗衣机的工作原理,利用可编程控制器PLC现实控制,说明了PLC控制的原理方法、特点及其控制洗衣机的特色!可编程控制器是以计算机为核心的通用自动控制装置，它的功能强、可靠性极强、编程简单、使用方便、体积小。现已广泛应用于工业控制的各个领域，它以微处理器为核心，用编写的程序进行逻辑控制、定时、记数和算术运算等，并通过数字量和模拟量的输入/输出来控制机械设备或生产过程。该设计采用西门子公司的S7-200系列可编程控制器。我们在这里有必要详细介绍西门子的S7-200系列可编程控制器的性能指标，硬件组成和指令。PLC的学习比一般编程学习困难在于，要完成一个控制系

2、统不仅需要掌握一定的编程技术，更为重要的是要知道如何针对实际应用的需要选择合适的PLC型号，设计控制系统。该设计为全自动洗衣机的PLC控制，主要介绍了全自动洗衣机的工作原理，控制系统的PLC的选型和资源的配置，控制系统程序设计与调试，控制系统PLC程序。最后，在该设计过程中给予极大鼓励和帮助的老师、同学，在此表示衷心的感谢。由于在设计过程中存在许多不足，希望老师同学指正。关键词：全自动洗衣机PLC控制软件设计目录1绪论·············································································

3、···············11.1概论·······················································································11.1.1PLC的产生和定义·····························································11.2PLC的特点·············································································21.3PLC的分类·······

4、······································································31.4PLC的主要技术指标·······························································31.4.1存储器容量·······································································31.4.2输入/输出点数··············································

5、····················31.4.3扫描时间···········································································41.4.4指令种类和数量································································41.4.5内部寄存的种类和数量·····················································41.4.6扩展能力···························

6、···············································41.4.7智能模块的种类和数量·····················································42PLC的结构和工作原理································································52.1PLC的基本结构·····································································5342.1.1整体式的结构

7、PLC·····························································52.1.2模块式结构的PLC·····························································52.2PLC的工作原理·····································································62.3PLC各组成部分介绍·····································