基于压铸机的PLC_控制系统.doc

基于压铸机的PLC 控制系统(一) 根据工业现场的需要和可编程控制器(PLC)自身特点，本设计为基于压铸机的PLC 控制系统。在这个设计中，本设计采用西门子公司PLC S7-300系列可编程控制器为例。结合了书籍和资料，说明了PLC的工作原理、软件使用方法、PLC的硬件系统设计及PLC软件系统设计。实现了对压铸机的液压系统的控制。?在该设计中，PLC作为主机，压铸机作为从机，构成基于压铸机的PLC的控制，完成对压铸机的整个工艺流程的控制，可反映压铸机在整个工作过程的工作状况。 【关键词】可编程控制器；压铸机；液压传动 Abstract According to the demand of industry the spot and programmable controller(PLC) oneself characteristics, this design for according to die-casting the PLC of machine control system.In this design, the serieses programmable controller of the company PLC S7-300 of this design adoption Siemens is an example.Combined book and data, explained design and the PLC software system design of the hardware system of PLC work principle, software operation method, PLC.Carried out to press the control of system towards die-castinging machine of liquid.In that design, the PLC is a host, die-casting the machine is from the machine, constitute according to the control of PLC of die-casting the machine, and the completion can reflect to die-casting machine in the whole work condition of work process to the control which die-castings the whole craft process of machine. 【Keywords 】programmable controller;Die-casting machine;The liquid presses to spread to move 目? 录摘要????????????????????????????????????????????? 1Abstract????????????????????????????????????????? 2前 言? ………………………………………………………………………………5第1章 概述………………………………………………………………………6?1.1压铸机的定义、发展及特点…………………………………………………6?1.1．1压铸机的定义……………………………………………………………6?1.1.2 压铸机的发展……………………………………………………………6?1.1.3压铸机的分类……………………………………………………………7?1.1.4压铸机的特点……………………………………………………………7?1.2 压铸机的组成…………………………………………………………………8?1.3 压铸机的工作原理……………………………………………………………8?1.4 PLC 的定义、分类及特点……………………………………………………8?1.4.1 PLC的定义………………………………………………………………8?1.4.2 PLC的分类……………………………………………………………8?按硬件结构类型分类……………………………………………8?按应用规模及功能分类………………………………………9?1.5 PLC的功能及应用…………………………………………………………9第2章 PLC与其他控制的比较……………………………………………10?2.1继电器控制方案……………………………………………………………10?2.2 集散控制方案 ………………………………………………………………10?2.3 P