Manufacturing industries face increasingly complex customer demands in terms of product customisation and delivery times. At the same time, batch sizes decline and production needs to adapt to flexible demands and highly configurable products. These circumstances pose significant challenges for both plant engineers and process planners. In this work, we explore a novel approach in order to establish a Closed Loop Engineering process chain for the Digital Factory by combining state of the art technologies from the fields of Production and Process Automation, Virtual Reality (VR), and Internet of Things (IoT). As a proof of concept, we developed a VR-demonstrator using the CONTACT Elements for IoT platform in conjunction with a web-based production process planner and Manufacturing Execution System (MES) written by the FZI in Java as well as the Unity game engine for real-time simulation in VR.