OPC UA PubSub with TSN is a powerful combination for automation engineers as it provides a standardized, secure, and deterministic means of communication in the industrial automation landscape. It offers the ability to build highly reliable, interconnected systems that can meet the stringent requirements of modern industrial processes.
OPC UA (Open Platform Communications Unified Architecture)
OPC UA is a standardized communication framework and platform-independent, service-oriented architecture for industrial automation. It allows machines, devices, and systems in the industrial environment to communicate and share data with each other. OPC UA provides a rich set of features for secure and reliable data exchange, including data access, alarms, events, and historical data.
OPC UA PubSub is an extension of the OPC UA standard that introduces a publish-subscribe communication model. In the traditional client-server model, a client requests data from a server. In the publish-subscribe model, publishers (devices or applications) send data to a message broker, and subscribers (other devices or applications) receive data from the broker. This decouples data producers from data consumers and enables more scalable and flexible communication patterns.
TSN (Time-Sensitive Networking):
TSN is a set of standards within the IEEE 802.1 working group that provides deterministic and time-critical capabilities to Ethernet networks. TSN aims to ensure that data is transmitted reliably and with predictable timing in industrial and real-time communication applications. It includes mechanisms for time synchronization, traffic shaping, and low-latency communication.