Glossary term
Pub/Sub
industrielAdvanced
Also known as
Publish/SubscribeOPC UA Pub/SubOPC UA Part 14
Definition
OPC UA communication model defined in Part 14 of the specification (IEC 62541-14). Decouples publishers and subscribers via DataSets published to a broker (MQTT/AMQP) or UDP multicast. Complements the client-server model for real-time data streams.
Questions using this term
- OPC UA supports two communication patterns: Client/Server (the classic Request/Response model) and Pub/Sub (publish/subscribe over MQTT or UDP multicast/unicast), the latter introduced in version 1.04 to address Industrie 4.0 use cases.1. Architecture · Client/Server vs. Pub/Sub
- Ignition (Inductive Automation) is a modern SCADA/MES platform built around native OPC UA: it ships one integrated OPC UA Server plus drivers for 60+ protocols (BACnet, Modbus, KNX via gateway, Siemens S7, etc.), a web-based HMI and an MQTT IIoT Pub/Sub engine.11. Vendor implementations · Ignition (Inductive Automation)
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