OPC技术在现场总线互操作中的应用

Application of OPC Technology in Realizing Filedbus Interoperation

OPC技术有广阔的应用前景。OPC技术提供了标准化访问接口,应用程序可以使用一致的方式访问设备中的数据。这一特点不仅在简化应用程序的开发方面存在巨大的优势,而且也是不同总线标准的现场设备之间实现互操作的关键,通过介绍OPC/DA和OPC/DX技术规范的特点,分析了利用这些特点来实现不同现场总线协议之间互操作的应用手段。对于OPC/DA规范在实现不同总线互操作方面所存在的问题进行了阐述,并提出了利用OPC/DX规范解决这些问题的方案。

OPC technology has wide application perspective.OPC technology provide standardized interfaces,by which applications are able to access data in a standard way.This characteristics not only shows great advantages in simplifying application development,but also is the key for interoperation between fieldbus devices of different protocols.With the introduction of OPC/DA and OPC/DX technologies,elaborates the methods to realize interoperation between different protocols and the problems encountered in interoperation as well as the solutions to solve those problems.