53- How to use MQTT in Siemens WInCC Unified SCADA. Build a Unified Namespace (UNS) under 30 minutes

Siemens WinCC Unified SCADA V21 introduces bidirectional MQTT communication built directly into your SCADA. You can now publish HMI tags to any MQTT broker, subscribe to MQTT topics and map them to tags, and customize topic structures for your Unified Namespace (UNS)—zero middleware required (thanks to the new TIA Portal Add-in). No data aggregation software, no custom gateways! Why It Matters: Build ISA-95 compliant or your own custom data architectures directly in WinCC Unified. Perfect for Industry 4.0 OT/IT integration without the complexity. This is a complete tutorial. You'll learn how to add a PLC, set up a WinCC Unified RT PC in new TIA Portal V21, configure the new MQTT data provider, and test bidirectional communications! Questions or comment? Feel free to share them in the comments!