JavaFX pohjainen OPC UA -simulaatiopalvelin

摘要

The topic of this thesis covers two relatively new technologies: OPC Unified Architecture (OPC UA) and JavaFX. OPC UA is an information modelling and exchanging standard. This thesis explains in the theoretical part the basics of OPC UA and JavaFX. The newest version of JavaFX is JavaFX 8. Because Java 8 and JavaFX 8 are bundled together, this thesis also presents some of Java 8's noteworthy new features.The practical part of this thesis is to build an OPC UA server application called Simulation Server using JavaFX for the graphical user interface. This is done to evaluate the feasibility of using JavaFX for the graphical user interface of OPC UA and other applications implemented with Java language. The requirements for the Simulation Server are presented. Also the used tools and the finished application are shown.The Simulation Server application is the end result of this thesis. The application can be used as a test server when developing OPC UA client applications or as a learning tool. The server provides a number of simulated signals. In addition to simulated signals there are also a number of displays for showing the internal state of the server and of the clients, which are connected to the server.The conclusion is that JavaFX is well suited for making graphical user interfaces for Java applications. It also has features, which can be useful in non-graphical applications. It has some flaws, for example the lack of pre-built dialogs, but for most flaws and problems a future update is already scheduled.