PCaPAC2012 - List of Authors (Pflueger, J.)

Paper

Title

Page

A Flexible and Testable Software Architecture: Applying Presenter First to a Device Server for the DOOCS Accelerator Control System of the European XFEL

131

A. Beckmann, S. Karabekyan, J. Pflüger
XFEL. EU, Hamburg, Germany

Presenter First (PF) uses a variant of Model View Presenter design pattern to add implementation flexibility and to improve testability of complex event-driven applications. It has been introduced in the context of GUI applications, but can easily be adapted to server applications. This paper describes how Presenter First methodology is used to develop a device server for the Programmable Logic Controls (PLC) of the European XFEL undulator systems, which are Windows PCs running PLC software from Beckhoff. The server implements a ZeroMQ message interface to the PLC allowing the DOOCS accelerator control system of the European XFEL to exchange data with the PLC by sending messages over the network. Our challenge is to develop a well-tested device server with a flexible architecture that allows integrating the server into other accelerator control systems like EPICS.

Slides THCD05 [0.590 MB]

Paper	Title	Page
THCD05	A Flexible and Testable Software Architecture: Applying Presenter First to a Device Server for the DOOCS Accelerator Control System of the European XFEL	131
	A. Beckmann, S. Karabekyan, J. Pflüger XFEL. EU, Hamburg, Germany
	Presenter First (PF) uses a variant of Model View Presenter design pattern to add implementation flexibility and to improve testability of complex event-driven applications. It has been introduced in the context of GUI applications, but can easily be adapted to server applications. This paper describes how Presenter First methodology is used to develop a device server for the Programmable Logic Controls (PLC) of the European XFEL undulator systems, which are Windows PCs running PLC software from Beckhoff. The server implements a ZeroMQ message interface to the PLC allowing the DOOCS accelerator control system of the European XFEL to exchange data with the PLC by sending messages over the network. Our challenge is to develop a well-tested device server with a flexible architecture that allows integrating the server into other accelerator control systems like EPICS.
	Slides THCD05 [0.590 MB]