HD67C07-G43-B2 Modbus TCP Slave and MQTT Broker Converter with LAN and LTE

HD67C07-G43-B2 – Modbus TCP Slave / MQTT Broker Converter with LAN and LTE.

HD67C07-G43-B2 is an industrial-grade communication converter designed to bridge Modbus TCP Slave devices with modern MQTT Broker architectures. Thanks to its dual connectivity options – Ethernet LAN and LTE SIM – the device ensures reliable data transmission in both wired and remote installations. It is an ideal solution for IoT platforms, SCADA systems, BMS environments and distributed automation networks. 

With a compact DIN-rail Modulbox 4M housing, wide operating temperature range (-40°C to +85°C) and robust EMC immunity, the HD67C07-G43-B2 delivers stable performance even in harsh industrial environments. The integrated MQTT Broker enables seamless communication between field devices and cloud applications, ensuring fast and secure data flow.

Key Features of the HD67C07-G43-B2

• Modbus TCP Slave – provides data access for supervisory and cloud systems.
• Embedded MQTT Broker – full publish/subscribe messaging support.
• LTE SIM connectivity – stable communication for remote or unmanned sites.
• MQTT topic control – configurable QoS, Retain, JSON templates and mapping.
• Software configuration via SW67C07 – full control over Modbus and MQTT settings.
• LED indicators for device status, MQTT, Modbus TCP and error diagnostics. 
• Galvanic isolation between power supply and Ethernet interface.
• Industrial housing type B – compact, reliable, DIN-rail mounted.

How the HD67C07-G43-B2 Works

The device operates as a Modbus TCP Slave, allowing SCADA, BMS or IoT systems to read data stored inside the converter’s internal memory. At the same time, its integrated MQTT Broker enables seamless data publishing to cloud platforms, dashboards or remote applications. This allows bidirectional communication for:

• Modbus TCP - MQTT: publishing process data to MQTT topics.
• MQTT - Modbus TCP: subscribing to topics and writing values to Modbus registers.

Support for JSON payloads, retained messages, QoS levels and MQTT bridges ensures compatibility with any IoT architecture. The device can serve as a communication core for distributed networks, energy systems, water infrastructure, HVAC automation and predictive maintenance platforms.

Ports and Connectivity

• 1× Ethernet RJ45 – 10/100 Base-T Autosensing.
• LTE SIM slot for mobile network connectivity.
• Power connector: 2-way terminal block, 8…24 V AC / 12…35 V DC.
• SMA antenna port for LTE antenna.

Technical Specifications

• Modbus TCP Slave: 10/100 Base-T Autosensing
• 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: SW67C07 – Download
• Order Code: HD67C07-G43-B2

Applications

• Industrial IoT and cloud data integration.
• SCADA, BMS and monitoring systems using MQTT.
• Remote installations requiring LTE communication.
• Energy, HVAC, water infrastructure and environmental systems.
• Telemetry and predictive maintenance platforms.