摘要
针对流程工业常用的兼容Modbus协议的智能设备,以一套小型电加热反应系统为对象,以PLC作控制器,利用触摸屏设计了界面友好、便于现场操作的人机界面,并设计上位机数据采集与监控(SCADA)系统,各部分通过Modbus TCP/IP协议互联通信,构成了一套PLC-HMI-SCADA系统,详细介绍了系统组成及组态设计。实际应用表明,基于Modbus TCP/IP协议通信的PLC-HMI-SCADA系统人机交互方便,便于扩展,通信速度高。
Aiming at intelligent devices with compatible Modbus protocol frequently-used in process industry,the human-computer interface with friendly interface and convenient on-site operation is designed with touch screen with PLC as controller and one small set of electrical heating reaction system as object.The upper computer supervisory control and data acquisition is also designed with interconnect communication among each section through Modbus TCP/IP protocol to construct one set of PLC-HMI-SCADA system.The system composition and configuration design are introduced in detail.Practical application results indicate the humancomputer interaction is convenient for Modbud TCP/IP protocol based PLC-HMI-SCADA system with easy extension and high communication speed.
出处
《石油化工自动化》
CAS
2015年第6期40-42,45,共4页
Automation in Petro-chemical Industry
关键词
通信协议
可编程控制器
触摸屏
数据采集及监控系统
Communication protocol
programmable logic controller
touch screen
supervisory control and data acquisition
