Building robust persistent layer on .NET platform
Wiszczor Tomáš, Jindřich Černohorský · ACMOS'05 Proceedings of the 7th WSEAS international conference on Automatic control, modeling and simulation · 2005
The article describes how metadata can be used for development of a robust basic IO like layer for a control system based on OPC DA. The article describes importance and basic features of metadata in the first part. In the second there is the practical example shows the creation of a persistent layer part. All code is written in C# language. Result layer simplifies working with OPC DA server. Items from OPC DA server can be mapped by persistent layer to objects in the code. The object knows how to send or load appropriate items to/from data fields or property fields. No other additional code is needed for creating a new object.