HD67C05-5-G43-VPN-B2 industrial Modbus Slave and MQTT Broker converter with LAN, LTE SIM and VPN

HD67C05-5-G43-VPN-B2 – Industrial Modbus Slave and MQTT Broker Converter with LAN, LTE SIM and VPN

The HD67C05-5-G43-VPN-B2 is an advanced industrial protocol converter designed to integrate Modbus Slave devices with modern MQTT Broker infrastructures. This version includes a built-in VPN service, enabling encrypted data transmission, secure remote access and fully protected connection channels for industrial automation, monitoring systems and IoT applications.

With support for both Ethernet LAN and LTE SIM communication, the device offers flexible installation options and full redundancy. It operates in a robust type B DIN-Rail housing, making it easy to integrate into control cabinets. Its extended operating temperature range allows reliable work in challenging field environments and remote outdoor locations.

Key Features of the HD67C05-5-G43-VPN-B2

• Modbus Slave RS485 – receives process values and register data from Modbus devices.
• MQTT Broker – allows publishing and subscribing of industrial data to IoT, SCADA and cloud platforms.
• Integrated VPN service – provides secure, encrypted communication for remote installations.
• LTE SIM communication – supports micro-SIM, APN configuration, authentication and signal diagnostics.
• Ethernet LAN 10/100 Mbps – stable wired communication for industrial networks.
• Configuration via SW67C05 – full control of Modbus, MQTT, VPN and network parameters.
• Diagnostic LEDs – indicate device status, Modbus traffic, MQTT activity and errors.
• DIN-Rail type B housing – suitable for professional industrial panel installations.
• Wide operating temperature range from -40°C to +85°C.
• Electrical isolation and high EMC resistance – stable operation in disturbed environments.

How the HD67C05-5-G43-VPN-B2 Works

The converter operates as a Modbus Slave, receiving data from field devices such as sensors, counters, controllers and telemetry modules. All acquired values are then published through the integrated MQTT Broker, allowing smooth distribution to SCADA platforms, cloud systems or IoT applications. MQTT supports configurable topic names, JSON formatting, publishing frequencies and quality of service settings.

The built-in VPN service creates a secure communication tunnel, essential for distributed installations where remote access and diagnostics must be performed without compromising data security. It ensures encrypted traffic and stable remote management even when using public networks.

Ports and Connectivity

• 1× Modbus Slave RS485 – 3-pin terminal block.
• 1× Ethernet LAN RJ45 – 10/100 Mbps communication.
• 1× SIM slot – LTE mobile communication.
• Power connector – 2-pin, 8–24 V AC / 12–35 V DC.
• Status LEDs – for Modbus, MQTT, device state and errors.

Technical Specifications – HD67C05-5-G43-VPN-B2

• Modbus Slave: up to 115200 bps
• MQTT Broker: 10/100 Base-T autosensing
• Operating temperature: -40°C to +85°C
• Dimensions: 70 × 60 × 95 mm
• Weight: approx. 200 g
• Mounting: DIN Rail (35 mm)
• Software: SW67C05
• Order code: HD67C05-5-G43-VPN-B2

Download Software

The SW67C05 configuration software is available here:
Download SW67C05