HD67C07-G43-E-VPN-B2 – Industrial Modbus TCP Slave / MQTT Broker Converter with LTE, eSIM and VPN

HD67C07-G43-E-VPN-B2 – Modbus TCP Slave / MQTT Broker Converter with LTE, eSIM and VPN.

HD67C07-G43-E-VPN-B2 is an advanced industrial communication converter that combines Modbus TCP Slave functionality with a fully integrated MQTT Broker. Equipped with LTE connectivity, a physical SIM slot, a built-in eSIM module and a secure VPN service, the device ensures reliable and encrypted data transmission between automation networks, cloud platforms and remote supervisory systems.

The converter is engineered for industrial environments where stability, cybersecurity and long-term availability are crucial. Its rugged Type-B housing, wide operating temperature range of −40°C to +85°C, galvanic isolation and DIN Rail installation make it suitable for demanding applications such as production lines, infrastructure systems, energy monitoring or remote telemetry installations.

Key Features of the HD67C07-G43-E-VPN-B2

• Modbus TCP Slave – full compatibility with industrial Ethernet automation systems.
• MQTT Broker – enables publishing and subscribing of industrial process data.
• LTE with SIM and integrated eSIM – redundant cellular communication for maximum uptime.
• VPN service – secure encrypted tunnels for remote access and SCADA/BMS communication.
• TLS support – certificate-based authentication and encrypted MQTT messaging.
• SW67C07 configuration suite – complete setup of Modbus, MQTT, bridges, topics and networking.
• Galvanic isolation – enhanced reliability in electrically noisy environments.
• Status LEDs – visual indicators for device status, MQTT activity, Modbus traffic and errors.
• Advanced LTE management – APN setup, authentication and network mode selection.
• Flexible JSON templates for structured MQTT data representation.

How the Converter Works

Operating as a Modbus TCP Slave, the device receives queries from PLCs, SCADA systems, BMS controllers and other supervisory equipment. Retrieved data can be published through the integrated MQTT Broker to cloud platforms, IIoT systems or analytic dashboards. Two-way communication allows MQTT subscribers to write values back to Modbus registers, enabling complete OT–IT integration.

With VPN encryption, all communication channels remain fully protected, making the device ideal for remote installations, public-network deployments and applications requiring strict cybersecurity compliance.

Ports and Connectivity

• 1× Ethernet RJ45 – Modbus TCP and MQTT communication.
• SIM slot and integrated eSIM – cellular LTE connectivity.
• Power input: 8–24 V AC / 12–35 V DC via 2-way terminal block.
• SMA Female connector – for LTE antenna connection.

Technical Specifications

• Modbus TCP Slave: 10/100 Base-T Autosensing
• MQTT Broker: 10/100 Base-T Autosensing
• Operating temperature: −40°C to +85°C
• Mounting: DIN Rail (35 mm)
• Dimensions: 70 × 60 × 95 mm
• Weight: approx. 200 g
• Software: SW67C07 Software
• Order code: HD67C07-G43-E-VPN-B2

Applications

• Industrial Modbus TCP to MQTT data integration
• Secure connectivity with VPN tunnels for SCADA, BMS and IIoT systems
• Remote machine monitoring using LTE and eSIM redundancy
• Cloud-based analytics and predictive maintenance
• Energy, HVAC, building automation and infrastructure monitoring