  The importance of Cyber Physical Systems (CPS) and Internet of Things (IoT)
applications is constantly increasing, especially in the context of Industry
4.0. Architectural decisions are crucial not just for performance, security and
resilience reasons but also regarding costs and resource usage. In this paper
we analyse two of the fundamental approaches to design control loops (i.e.
time-driven and event-driven), show how they can be realised and evaluate their
power requirements. Through this the design criteria can be extended also
considering the optimization of energy related aspects.
