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13th Real-Time Linux Workshop from October 20 to 22 at the Faculty of Electrical Engineering, Czech Technical University in Prague

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Platform independent remote control and data exchange with real time targets

Martin Leonhartsberger, Institute for Measurement Technology, Johannes Kepler University, Linz, Austria
Bernhard Zagar, Institute for Measurement Technology, Johannes Kepler University, Linz, Austria

Most realtime applications in context to automatic control and data acquisition do require user interfaces to change parameters or to extract data on runtime. Especially in prototyping control processes, it is common to use CACSD programs such as Matlab or Scicos for code generation. While still being in the prototyping stage the customer demands to start evaluation using a software tool. Very often those customers do not possess the ability to work with CACSD tools or other tools as xRTAILab because of missing licenses or lack of knowledge in linux. To close the gap between the realtime target and data evaluation a remote control framework is introduced. Our approach is to use RTAIXML as a XML-RPC server. It is running on the rt-system and has the ability to connect to CACSD generated code. This server instance can be contacted through a platform independent Java framework which allows quick prototyping of simple to use user interfaces without interfering the control system development. It is possible to transfer scopes and to change parameters on running targets. Because of layer based design patterns it is easy to change the remote communications layer in a later project step if needed.