In 2011, the European X-Ray Free Electron Laser (EuXFEL) commenced parallel developments of their control system (Karabo) and the Programmable Logic Controller (PLC) library. The PLC library was designed to control basic beamline components and under the initial assumptions, the automation component was deferred to the control system layer. After five years of operation, it can be seen that not all initial assumptions scaled well to the operational needs of the facility resulting in limitations hindering progress. Having identified these issues, the PLC development is now focused on providing a more cohesive and adaptable solution. In utilizing the IEC61131-3 (3rd edition) features, the PLC library has been restructured towards a layered architecture with loose coupling between function blocks. The ultimate goal will be to achieve a PLC library which is not only test driven and capable of quickly integrating in new devices, but can achieve dynamic linking not only between hardware and software, but also across software devices, aiding the rapid development of more complex hardware integration and higher-level automation. Proceedings of the 13th International Workshop on Emerging Technologies and Scientific Facilities Controls, PCaPAC2022, Dolní Brežany, Czech Republic