HD67C28-G43-E-VPN-B2 OPC UA Client to MQTT Broker converter with LTE Micro-SIM, eSIM and VPN service

HD67C28-G43-E-VPN-B2 – industrial OPC UA Client / MQTT Broker converter with built-in VPN service, housing type B, DIN rail mounting, LAN and LTE connectivity (Micro-SIM + internal eSIM).

HD67C28-G43-E-VPN-B2 is an industrial communication converter designed to integrate data sources available via OPC UA with systems that use MQTT. The device operates as an OPC UA Client, allowing it to read variables from OPC UA Servers on the plant network and expose them to higher-level applications, IoT platforms and analytics systems through an embedded MQTT Broker.

The key differentiator of HD67C28-G43-E-VPN-B2 is the integrated VPN service, enabling encrypted remote access to the infrastructure and process data. Combined with LTE connectivity (Micro-SIM plus internal eSIM), this variant supports secure communication in distributed automation systems, mobile installations and sites without fixed wired connectivity, while simplifying long-term SIM logistics across multiple locations.

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 G43 version includes a cellular module and an SMA Female antenna connector (antenna with SMA Male).

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 HD67C28-G43-E-VPN-B2 is configured using dedicated software SW67C28. 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 servers
• Define the list of topics to be forwarded via the internal bridge
• Configure the settings related to the integrated VPN service
• Set LTE parameters (for example APN and SIM PIN) for Micro-SIM and eSIM connectivity
• Update the device

Product features:

• 1x Ethernet RJ45 (programming, MQTT and OPC UA)
• LTE connectivity: Micro-SIM and internal eSIM
• Antenna connector SMA Female (antenna with SMA Male)
• OPC UA Client functionality
• Embedded MQTT Broker
• Integrated VPN service
• 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

Technical specification:

• Service: VPN service
• OPC UA protocol: OPC UA Client
• Ethernet + LTE protocol: MQTT Broker
• Connectivity: LAN + SIM LTE + eSIM
• Ports: 1x Ethernet; SIM Card (Micro-SIM); eSIM
• OPC UA connector: RJ45
• MQTT connector: RJ45 (MQTT over LAN and LTE)
• 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: SW67C28
• ORDER CODE: HD67C28-G43-E-VPN-B2

Software SW67C28 for HD67C28-G43-E-VPN-B2 – DOWNLOAD

Manufacturer warranty: 12 months

HD67C28-G43-E-VPN-B2 is used in projects where you need a secure bridge between OPC UA data sources and an MQTT infrastructure, with reliable remote access enabled by VPN and LTE connectivity. The internal eSIM helps standardize deployments across many sites and reduces the operational overhead of SIM handling in the field.

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