Transport protocols
The OPC UA Pub/Sub extension defines different transport protocols over which data can be transmitted. Those transport protocols include:
- UDP for fast machine-to-machine communication
- MQTT for machine-to-cloud communication
Each protocol has its own advantages and disadvantages and it depends on the application project which transport is the right one to use. Although MQTT is considered an "IoT" protocol and is often used together with cloud services, it is of course not restricted to cloud-related use cases because MQTT connectivity can also be set up within a private network.
The product TF6105 TC3 OPC UA Pub/Sub supports both transport protocols. The following chapters describe the individual configuration parameters for each transport protocol.