HD67C29-B2 OPC UA Server to MQTT Broker converter for Ethernet and DIN rail control cabinets

HD67C29-B2 – industrial OPC UA Server / MQTT Broker converter, housing type B, DIN rail mounting, LAN Ethernet connectivity (RJ45), fixed screw terminal block connectors.

HD67C29-B2 is an industrial communication converter designed for projects where you need to connect the OPC UA world with an MQTT-based infrastructure. The device operates as an OPC UA Server, exposing data to OPC UA Clients, and at the same time it provides an embedded MQTT Broker on Ethernet, enabling MQTT publish and subscribe communication.

In practice, HD67C29-B2 helps standardize data exchange between industrial applications and IoT layers: variables exposed by the OPC UA Server can be mapped to MQTT topics, and MQTT Clients can work with a clear, topic-based structure. This approach fits SCADA, BMS and MES integrations, as well as analytics use cases where consistent data access matters.

The Ethernet RJ45 port is used for device programming and for MQTT and OPC UA communication. The interface provides one MAC Address for MQTT and one for OPC UA, which helps keep network diagnostics and traffic identification clear.

The device provides:

• Electrical isolation between Ethernet and Power Supply
• Wide operating temperature range -40°C to +85°C
• Wide power supply range: 8…24V AC / 12…35V DC
• Consumption at 24V DC: 5 W
• 35 mm DIN rail mounting
• Industrial enclosure Modulbox 4M, type B with fixed screw terminal connectors

These parameters ensure reliable operation in demanding industrial environments.

Configuration:

Model HD67C29-B2 is configured using dedicated software SW67C29. With it you can:

• Define the parameters of MQTT
• Define the parameters of the OPC UA line
• Define the list of allowed MQTT Clients
• Define the list of MQTT topics published and subscribed from/to OPC UA Clients
• Define the list of topics to be forwarded via the internal bridge
• Update the device

Product features:

• 1x Ethernet RJ45 (programming, MQTT and OPC UA)
• OPC UA Server functionality
• Embedded MQTT Broker
• Data rates: 10/100 Base-T Autosensing
• 4 status LEDs (Device State, OPC UA comm., MQTT Broker comm., Error State)
• Recovery mode via hardware button BTN1 (default IP 192.168.2.206 via webserver in Recovery Mode)
• Device discovery using the ADFweb Discovery Tool
• DIP switch (Normal Mode / Boot Mode)

Technical specification:

• OPC UA protocol: OPC UA Server
• Ethernet protocol: MQTT (embedded MQTT Broker)
• Ports: 1x Ethernet
• OPC UA connector: RJ45
• MQTT connector: RJ45
• Data Rates OPC UA: 10/100 Base-T Autosensing
• Data Rates MQTT: 10/100 Base-T Autosensing
• Power supply: 8…24V AC / 12…35V DC
• Power supply connector: 2-way 5 mm terminal block
• Operating temperature: -40°C to +85°C
• Dimensions: 70 x 60 x 95 mm (D x W x H)
• Weight: approx. 200 g
• Mechanical fixing: DIN rail mounting
• Software: SW67C29
• ORDER CODE: HD67C29-B2

Software SW67C29 for HD67C29-B2 – DOWNLOAD

Manufacturer warranty: 12 months

HD67C29-B2 is used in projects where you need to expose OPC UA data through an MQTT layer in a clean and predictable way, while keeping industrial-grade reliability (isolation, wide temperature range, AC/DC power supply and DIN rail mounting).

For more details and technical support, please visit our contact page.