Design and application of fieldbus OPC DA server

Abstract

OPC is one of the most important communication specification in the industrial control community. Taking one kind of LonWork fieldbus products developed by our self as one case study, we implement an OPC DA Server for the fieldbus based on the given APIs of the device driver. The implementation principles of four important parts: real-time database, GUI, OPC data access, I/O read and write, are probed in detail. This opc server, together with several popular SCADA software such as iFix and KingView, has successfully applied in many intelligent buildings' projects. © 2011 Springer-Verlag Berlin Heidelberg.