Prototype Implementation of the PLC Standard IEC 1131-3

Acknowledgements We would like to thank our supervisor Karl-Erik Årzén for giving us good guidance and support. A special thanks for arranging meetings with the industry where we got a lot of inspiration for our work. We would also like to to thank Leif Andersson for helping us with L A T E X. Thanks also to our opponents Ulf Holmgren and Michael Templin for giving constructive feedback on our work. Finally we would like to thank all the staff here at the Department of Automatic Control for making our time here very nice.