Synchronous and Asynchronous Requirements for Digital Twins Applications in Industry 4.0

The Industry 4.0 revolution brings up novel concepts and restraints when proposing and designing novel applications. Although its perspectives are new, the main restraints must also observe conservative constraints of the industrial processes, such as real-time capability and asynchronous design. Among the main tools to develop cutting-edge industrial applications, a novel relevant approach to presenting information and interacting with the Digital Twins (DTs) process. This work evaluates how to model and measure the primary Industry 4.0 constraints in designing novel applications using DTs. This work separates the restraints into two categories: asynchronous and synchronous requirements. First, this work designs a high-level DT system communication flow through a Petri Net model to analyze the asynchronous requirements. Then, it performs a synchronous test with a physical instance of the proposed model. The results display the requirements for safe operation on the case-study system regarding timing and modeling constraints.