PLC实训要点.docx

电气工程学院课程设计任务书课程名称：欧姆龙plc实训班级：自动化1433姓 名:张新权学号:目：液体混合装置的PLC控制起迄日期:2016年5月9日～2016年5月20日设计地点:电气楼327指导教师:朱长卿发任务书日期: 2016年5月9日摘要随着我国经济的高速发展，微电子技术，计算机技术和自动控制技术也得到 了迅速发展，但是我国工业企业的自动化程度普遍较低，PLC产品有很大的应用空间，如机械行业80%以上的设备仍采用传统的继电器和接触器进行控制。因此，PLC在我国的应用潜力远没有得到充分发挥.我国大中型企业普遍采用了先进的自动化系统对生产过程进行控制，但绝 大部分小型企业尚未应用自动化系统和产品对生产过程进行控制。随着竞争的日益加剧，越来越多的小型企业将采用经济、实用的自动化产品对生产过程进行控制，以提高企业的经济效益和竞争实力。 ???? 我设计的题目是“多种液体自动混合装置的PLC控制”，此次设计主要内容包括：工作过程分析，I/O分配，梯形图，指令表，接线图，电气原理图及情况说明, 经过多次修改和调试，最终完成了这次实验。 本文通过对“多种液体自动混合装置的PLC控制”的分析，解决了按下启动按钮SB1，液体A阀门打开，液体A流入容器，当液面到达SQ3时，SQ3接通，关闭液体A阀门，打开液体B阀门；当液面到达SQ2时，关闭液体B阀门，打开液体C阀门；当液面到达SQ1时关闭阀门C，搅匀电动机开始搅匀；搅匀电动机工作1min后停止搅动，混合液体阀门打开，开始放出混合液体等控制问题，实现了控制装置根据液位不同时状态自动转换的的任务。同时本文还论述了在进行程序设计时遇到的问题和不足，最终我们通过自己的努力解决了这些问题关键词：自动控制 PLC 多种液体自动混合目录1.引言········································································42.已知情况，控制要求，设计要求················································62.1已知情况··································································62.2控制要求··································································62.3设计要求·································································73.总体设计思路································································83.1 I/O地址表·······························································84.硬件设计······················································104.1元器件选择·······························································104.2元器件参数·····························································114.3元器件清单···························································124.4硬件控制原理图··························································135.软件设计··································································155.1设计思想及程序框图······················································155.2·程序设计与说明······················································166. 程序说明·······························································207.小结····································································211引言随着科学技术的猛速发展，自动控制技术在人类