Transformation of existing IEC 61131-3 automation projects into control logic according to IEC 61499

The new IEC 61499 standard provides new concepts and paradigms of system engineering to the automation and control system domain. But the customer can not start from scratch and develop their systems new as they have invested a lot of money into libraries and control logic. Therefore this paper aims at a transformation of existing IEC 61131-3 automation projects into the models of the new IEC 61499 standard. Next to the transformation of the control logic itself it is of eminent importance to consider also the overall architecture defined in IEC 61131-3, as especially the different kinds of variables influence the functionality of an automation project to a big extent.