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MQTT integration

MQTT integration

Overview

MQTT interface is able to connect to one or more MQTT brokers – the NETx Server has no built-in broker. For each broker, MQTT topic can be defined that are represented as Server Items. It is possible to publish data changes to these topic (writable Server Items). In addition it is possible to  subscribe to these topics for retrieving data changes (readable Server Items).

The interface is available for free. Each defined MQTT data point is decreasing the available license data points by one.

Installation

The MQTT interface is provided as an app and is not included within the default setup.

To install the MQTT interface, open the App Manager, select ADD APP, and press the download button near to the entry MQTT.

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This will download the app and prepare it for installation. Afterwards, restart the Core Server, close the Core Studio and reopen it. Within the Modules menu of the Core Studio you will find a new sub menu MQTT. It contains entries for all definitions that are necessary for configuration the MQTT interface.

Configuration

Interface is available for the following products: 

  • NETx BMS Platform

  • NETx Multi Protocol Server

  • NETx BMS Server 2.0

Changelog

Version

Date

Notes

Build

Version

Date

Notes

Build

1.1.1

Feb 19, 2026

Improvements

  • Support for MQTT version 3.1.0 and 3.1.1.

  • Update to .NET 10

Fixes

  • Disabled data points are still considered as enabled – fixed.

71

1.1.0

Apr 10, 2025

New features

  • Change to .NET 8 app.

  • Show version, uptime and connected clients of #SYS topic as items.

  • New broker config option: Ignore Item Quality

  • New broker config option: Verify TLS certificate

  • New broker config option: Max topics per subscription

  • New data point config option: Retain

  • New data point config option: QoS Level

Improvements

  • Support for TLS 1.3

Fixes

  • Write-only data points must not subscribe – fixed.

  • Suspicious warning if hostname is used instead of IP address – fixed.

 

1.0.4

Dec 23, 2020 

New features

  • Support for TLS client certificates.

Improvements

  • MQTT client ID can be configured now.

  • Keep alive interval can be configured now.

Fixes

  • Incoming MQTT messages are not shown in Telegram Monitor – fixed.

 

1.0.3

Jun 4, 2020 

New features

  • Support for main/backup solution

Improvements

  • Culture info for data type conversion can be defined for each broker now

Fixes

  • Publishing data was using wrong encoding – fixed.

 

Further articles