| S7-200PLC在除湿机控制系统中的应用 |
| |
| 引用本文： | 罗锋华,刘建春. S7-200PLC在除湿机控制系统中的应用[J]. 机械制造与自动化, 2011, 0(3) |
| |
| 作者姓名： | 罗锋华 刘建春 |
| |
| 作者单位： | 江西现代职业技术学院,江西南昌,330095 |
| |
| 摘 要： | 采用西门子S7-200 PLC为主控制器,配以人机界面TD400C和通信模块EM277,设计了某除湿机控制系统.温度、湿度的采集采用频率输出方式的传感器/变送器,将频率信号接入PLC集成的高速脉冲输入口,定时计数从而得到采样值.控制指令可以从数字输入接口、TD400C或上层计算机获得;系统运行状态也可在数字输出接口、TD400C上显示或传送至上层计算机.
|
| 关 键 词： | PLC 人机界面 通信模块 高速计数器 除湿机 |
Application of S7-200 Programmable Logic Controller in Control of Dehumidifier |
| |
| LUO Feng-hua,LIU Jian-chun. Application of S7-200 Programmable Logic Controller in Control of Dehumidifier[J]. Machine Building & Automation, 2011, 0(3) |
| |
| Authors: | LUO Feng-hua LIU Jian-chun |
| |
| Affiliation: | LUO Feng-hua,LIU Jian-chun(Jiangxi Modern Polytechnic College,Nanchang 330095,China) |
| |
| Abstract: | This paper uses S7-200 PLC as main controller to design a dehumidifier control system,which is equipped with HMI TD400C and communication module EM277.The frequency-out mode sensors or transducers are used to acquir the temperature and humidity datum.The frequency signals are connected to the high speed counter of PLC.The pulses are counted at regular time to obtain the sampling value.The control instruction can be got from the digital input interface,TD400C and upper computer,and the running status can be ... |
| |
| Keywords: | PLC HMI communication module high speed counter dehumidifier |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
