SysML-Based Modeling of Token Passing Paradigm in Distributed Control Systems

Distributed control systems are often used in many branches of industry and frequently replace standalone controllers. However, their operation is more complex and include aspects of communication between various devices. To operate correctly, it is crucial to ensure that timeliness of communication is satisfied. In this paper, the approach to modeling of the token passing paradigm, as well as the multi-master communication with token exchange has been presented. The proposed models are based on a few kinds of SysML diagrams, namely Block Definition, Internal Block, State Machine, and Sequence Diagrams. The paper presents a set of dedicating modeling rules together with their detailed explanation.