基于PLC的火电厂输煤控制系统摘要：文章介绍了火力发电厂输煤控制系统特点，火力发电厂输煤PLC控制系统的结构、功能和操作方式。PLC在火力发电厂输煤控制系统应用的实践证明：PLC是实现火电厂热工自动化的理想控制器，PLC不但能完成复杂的继电器逻辑控制而且能完成模拟量控制及智能控制，并能实现远程通讯、联网、上位机监控等。关键词：火力发电厂；输煤控制系统；PLC；MCGSAbstract:Thisarticleintroducesthecharacteristicofcontrolsystemofthermalpowerplantcoal,thermalpowerplantcoalhandlingcontrolsystemPLCstructure,functionandoperationway.PLCinthethermalpowerplantcoalhandlingcontrolsystemapplicationofpracticehasproved:PLCistherealizationofthermalprocessautomationofpowerplanttheidealcontroller,PLCnotonlycancompletecomplexrelaylogiccontrol,andcancompletetheanalogcontrolandintelligentcontrol,andcanrealizetheremotecommunications,networking,computermonitoring.Keywords:powerplant;coalhandlingcontrolsystem;PLC;MCGS目录1S7-200西门子PLC概述..............................................................................................................31.1S7-200PLC的结构及技术性能......................................................................................31.1.1S7-200CPU的结构........................................................................................31.1.2S7-200CPU22X的电源.....................................................................................51.1.3S7-200的工作方式.............................................................................................61.1.4S7-200CPU22X的输入/输出接口...................................................................81.1.5S7-200CPU的扩展模块......................................................................................91.2S7-200PLC的寻址方式及内部数据存储区..........................................................121.2.1数据长度............................................................................................................121.2.2常数..................................................................................................................1311.2.3寻址方式............................................................................................................132PLC编程软件Step7/Win32及上位机软件MCGS....................................................................142.1STEP7-Micro/WINV4.0介绍...........................................................142.1.1基本功能............................................................................................................142.1.2其他功能............................................................................................................142.2组态软件MCGS介绍.......................................................................................................162.2.1MCGS6.2网络版...............................................................................................172.2.2MCGS6.2通用版...............................................................................................173火电厂输煤控制系统的基本构成与工艺.................................................................................193.1输煤系统概况................................................................................................................193.1.1输煤系统定义.....................................................................................................19现代的输煤系统...
