Very often PLCs are used for the realization of big plants in industrial industry where also controller applications appear. According to the standard EN 61131-3 the program languages instruction list (IL), ladder diagram (LD), function block diagram (FBD), sequential function charts (SFC) and structured text (ST) are used for the programming. If the design of the controller is more complex (e.g. state space controller with more inputs), all these languages are not very suitable for the programming. Due to that the tool MatLAB-Simulink is very common for the controller design of complex...