Softing‘s new White Paper discusses a prototype implementation of an OPC UA publisher/subscriber stack based on the emerging Time-Sensitive Network (TSN) Standard (IEEE 802.1).
OPC UA has established itself in recent years as the leading standard for smooth communication between all levels of automation in industrial production. For complex processes with real-time requirements, such as those incurred in future “Industrie 4.0”/Industrial Internet of Things (IIOT) solutions, the scope of the current OPC UA standard however is reaching its limits. Two expansions are supposed to change this. The first is the extension of the known client/server mechanism by a publisher/subscriber model, which allows one-to-many and many-to-many communication. Secondly, the Time-Sensitive Network Standard (IEEE 802.1) will be used to secure deterministic data exchange.
Prototype Implementation of an OPC UA Publisher/Subscriber Stack
Softing is the first to have implemented the OPC UA publisher/subscriber functionality for practical evaluation and has presented the results in a White Paper. Softing’s application demonstrates a guarantee of service for controller-to-controller communication and the deterministic communication via an existing Ethernet-based infrastructure. Control processes, streaming and data traffic run over one standard Ethernet network without affecting real-time data delivery or wasting bandwidth.
The White Paper describes
- which possible applications for deterministic publisher/subscriber communication exist
- how the basic architecture of the OPC UA publisher/subscriber application looks like
- what improvements in cycle times arise in the communication with the TSN Standard