目录
摘要 ...............................................................................................................I
Abstract ........................................................................................................II
目录 ............................................................................................................III
前言 ..............................................................................................................1
1 水泥概述 ..................................................................................................2
1.1 水泥的产生和发展 ........................................................................2
1.2 水泥的分类 ....................................................................................3
1.3 水泥的生产工艺流程 ....................................................................4
2 系统模型及总体设计 ..............................................................................6
2.1 水泥自动配料的原理分析 ............................................................6
2.2 系统的模型分析 ............................................................................7
2.3 系统的总体设计 ............................................................................8
3 系统主要器件的介绍 ............................................................................10
3.1 西门子变频器简介 ......................................................................10
3.1.1 MM420 基本组成及特点..........................................................10
3.1.2 MM420 适用环境及优点..........................................................11
3.2 称重及测速装置简介 ..................................................................11
3.3 定量给料机简介 ..........................................................................13
4 PLC 简介及控制系统设计 .....................................................................14
4.1 PLC 简介 .......................................................................................14
4.2 系统控制要求分析 ......................................................................16
4.2.1 硬件介绍及信号传递.............................................................18
4.2.2 PLC 外部接线图 ....................................................................20
5 程序和组态 ............................................................................................22
5.1 系统主程序设计 ...........................................................................22
5.2 子程序设计 ..................................................................................26
