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 and MQTT broker.

This gateway is provided as an open source version based on open62541 and currently uses a custom JSON encoding for the payload. It is planned to migrate to OPC UA part 14 JSON encoding and defined topic tree, as soon as v1.05.03 is published.

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 20.04 and 22.04
• Standalone binary x86_64 (64bit) Linux .deb package for ubuntu 20.04 and 22.04
• container image x86_64

The binaries can be downloaded here

A configuration file example as well as documentation is available here.

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