TY - JOUR A1 - Langmann, Reinhard A1 - Michael, Stiller T1 - The PLC as a Smart Service in Industry 4.0 Production System T2 - Applied Sciences Y1 - 2019 UR - https://opus4.kobv.de/opus4-hs-duesseldorf/frontdoor/index/index/docId/3994 SN - 2076-3417 VL - 9 IS - 18 PB - MDPI ER -