Digitalization starts already on the field level. PROFINET fulfills the special requirements of the process industry in terms of availability, flexibility, real-time capability and robustness through scalable system redundancy, changeability during operation ("Configuration in Run") and highly accurate time synchronization for sequence of events ("SoE"). Flexible architectures offer the potential for significant savings in cabling. At the same time, the Ethernet-based technology impresses with its easy handling.The motto "one cable for everything" makes it possible to run profiles such as PROFIsafe, PROFIdrive and other TCP/IP protocols in parallel without affecting the basic plant communication.