Comparison of a transformed Matlab/Simulink model into the programming language CFC on different IEC 61131-3 PLC environments

In this paper, the structure and the simulation results of a model between Simulink and different PLC environments (integrated development environment) will be compared. The transformation of the simulation model from Simulink into a PLC code, which is compatible to the investigated PLC environments, is realized with a self-developed code generator. Continuous Function Charts (CFC) is used as target language for the PLC environments. The investigated PLC environments are TwinCAT (Beckhoff), PCS7 (Siemens) and PC Worx (Phoenix Contact). For the comparison, a simple speed control model was designed in Simulink. The code transformation and evaluation of the structure and simulation results show, that the PLC environment of Beckhoff has the best accordance in structure with the simulation model in Simulink. However, the PLC environment of Siemens shows the best accordance the simulation results with Simulink.