Working Group 2 “Connect & Control” (formerly, WG 1 “Smart Infrastructure”) at SmartFactoryKL is focused on the subject of safety at modular, Industrie 4.0 production plants. The digital representation of machines requires specific safety content for a practical implementation of a simplified, partially or fully automated, machine safety assessment. From a safety perspective, the required content for a digital machine representation should be standardized under a concept based on simple interchangeable machine modules or, a ”Plug & Produce” production plant. Furthermore, the need for standard safety semantics is also recognized. Both of these standardization requirements are necessary to ensure the feasibility of “Plug & Produce” as well as to realize “dynamic machine safety” and the associated increase in efficiency and productivity