文档介绍：基于OPC技术的LabVIEW与PLCs通信
摘要
研究虚拟仪器软件LabVIEW与可编程控制器S7-200 PLC的数据接口技术。应用美国国家仪器公司的OPC服务器和LabVIEW的DSC模块技术建立工作站与PLC软件的数据通信方式,为LabVIEW环境下PLC软件控制系统的动态监控提供一种通用方法。OPC接口技术的出现使工业自动化系统中独立单元之间的互联趋于标准化,顺应了自动化系统向开放、互操作、网络化、标准化方向发展的趋势,是自动化控制系统中很有发展前景的一种数据交换标准。
美国国家仪器公司的LabVIEW是一种应用于领先工业软件的工具测试设计、测量和工业控制系统。可编程逻辑控制器(PLC),或可编程序控制器是一个数字化的计算机用于自动化的工业生产过程,如控制机械的工厂装配生产线。对于过程控制的对象连接与嵌入(OPC)是一种标准发展的原始命名通过工业自动化的工业任务。NI OPC Servers 是一个32位的Windows应用窗口,它能提供一种从工业设备和系统带入信息和数据进入到客户端的PC上。
该论文探讨了如何利用LabVIEW数据记录和监控模块(DSC)和OPC技术开发监控软件。 DSC既可作为OPC Client从现场设备获取数据,又可作为OPC Server为其他的应用软件提供一种便捷的数据访问方式。LabVlEW DSC和OPC技术的结合为系统集成提供了一种高效的解决方案。
关键词:LabVIEW, OPC,PLC,数据通信
Based
on OPC between LabVIEW and munication
Abstract
A new technique of data exchange between LabVIEW and PLCs is presented in this using the OPC(OLE for Process Contro1)server of NI and the DSC technique of LabVIEW,munication mode between LabVIEW and PLCs is built paper provides a general means to monitor PLC control system on LabVIEW environment.
National Instruments LabVIEW is an industry-leading software tool for designing test, measurement, and control programmable logic controller (PLC), or programmable controller is a puter used for automation of industrial processes, such as control of machinery on factory assembly for Process Control (OPC) is the original name for a standard developed in 1996 by an industrial automation industry task force. NI OPC Servers are a 32-bit windows application that provides a means of bringing data and information from a wide range of industrial devices and systems into client applications on your windows PC.
In this paper,a method based on LabVIEW DSC and OPC technology is introduced how to develop monitor and Control Datalogging and Supervisory Control(DSC) Module can act as an OPC Client acquiring data from field devices as well as an OPC Server providing other applications a convenient way to access of DSC modu