Gateway

To connect your local OPC UA server to the umati.app the initiative provides a software gateway. This gateway subscribes via OPC UA (Client/Server; TCP Binary) to your server and publishes the information to an MQTT broker.

The uamtiGateway is provided as an open source version based on OPC UA .NET Standard Stack and uses the UA JSON encoding according to OPC UA part 14 and a defined topic tree.

Architecture

High level

OPC UA server — Gateway — MQTT Broker — umati.app

With protocols

• OPC UA server — OPC UA TCP binary —> Gateway
• Gateway — MQTT over Websockets —> MQTT Broker
• MQTT broker — MQTT over Websockets —> device viewing umati.app

Configuration and connection

The detailed configuration of the client and how to deploy and run it is described in the source repository.

The gateway is provided as

• Standalone binary x86 (32bit) Linux/Windows
• Standalone binary x86_64 (64bit) Linux/Windows
• Standalone binary x86 (32bit) Linux .deb package for Ubuntu 22.04 and 24.04
• Standalone binary x86_64 (64bit) Linux .deb package for Ubuntu 22.04 and 24.04
• container image x86_64/arm64

The binaries can be downloaded at umatiGateway Releases

To obtain credentials to connect to the umati.app MQTT broker please follow Server documentation.