HD67G07-5-G43-VPN-B2 Modbus Slave to HTTP/REST Client converter with LTE and VPN

HD67G07-5-G43-VPN-B2 connects Modbus Slave RS485 devices with HTTP/REST Client communication via Ethernet, SIM LTE and VPN service.

HD67G07-5-G43-VPN-B2 is an industrial ADFweb converter designed to integrate devices operating as Modbus Slave on the RS485 side with systems and applications using HTTP/REST communication in client mode. This model is especially useful wherever classic serial field communication must be connected with Ethernet infrastructure and secure remote access over a mobile network.

The HD67G07-5-G43-VPN-B2 variant offers LAN + SIM LTE connectivity together with VPN Service, making it suitable for both local industrial networks and distributed applications where remote communication is required. It is a practical choice for automation integrators, telemetry systems, building automation installations and service environments that need stable communication between Modbus Slave RS485 devices and an HTTP/REST Client environment.

The device is designed for industrial operation. It provides electrical isolation between Ethernet and power supply, mounting on a 35 mm DIN rail, a wide power supply range of 12..35V DC / 8..24V AC and an operating temperature range of -40°C to +85°C. The compact housing type B makes installation easy inside control cabinets, while the power consumption of approximately 5 W/VA at 24V DC supports straightforward panel power planning.

On the hardware side, the model is equipped with 1 RS485 port with a 3-way 5 mm terminal block, 1 RJ45 Ethernet port and a SIM slot for LTE connectivity. For the G43 version, the manufacturer specifies an LTE module, an SMA Female antenna connector and Micro-SIM card support. The Ethernet port is used both for programming the device and for HTTP/REST communication, which makes the converter suitable for locations without fixed wired infrastructure.

Ethernet communication works at 10/100 Base-T Autosensing, while the RS485 side supports transmission speeds up to 115200 bps. For the RS485 line, the manufacturer provides 120Ω termination activated by DIP-switch 1, and the maximum line length can reach 1200 m. This is an important advantage wherever field devices are distributed over a larger area.

The converter includes four status LEDs that indicate device status, Modbus communication activity, HTTP/REST activity and error status. In addition, the module is equipped with a Recovery button, which allows the device to enter recovery mode in the event of firmware or configuration issues. This is an important feature in industrial applications where quick service recovery matters.

Configuration is carried out using SW67G07, which allows the user to define HTTP/REST parameters, configure Modbus line settings, define the list of HTTP/REST servers for communication with Modbus Master devices and configure endpoints. The software also allows device updates and adaptation of the converter to the requirements of a specific industrial application.

Product features

• industrial Modbus Slave / HTTP/REST converter operating in client mode;
• Ethernet + SIM LTE connectivity for local and remote communication;
• VPN Service support for more secure remote access;
• 1x RS485 serial port and 1x RJ45 Ethernet port;
• Modbus Slave communication on the serial side;
• HTTP/REST communication on the Ethernet and LTE side;
• RS485 data rate up to 115200 bps;
• 10/100 Base-T Autosensing Ethernet communication;
• RS485 120Ω line termination activated by DIP-switch;
• maximum RS485 line length up to 1200 m;
• electrical isolation between Ethernet and power supply;
• SMA Female antenna connector and Micro-SIM support;
• 35 mm DIN rail mounting;
• 4 status LEDs and Recovery button;
• configuration and update via SW67G07.

Technical specification

• Model: HD67G07-5-G43-VPN-B2
• Device type: Modbus Slave / HTTP/REST Client - Converter, Port RS485, with VPN
• Service: VPN Service
• Connectivity: LAN + SIM LTE
• Ports: 1xSerial; 1xEthernet; SIM Card
• Serial protocol: Modbus Slave
• Ethernet + LTE communication: HTTP/REST Client
• RS485 connector: 3way 5mm terminal block
• HTTP/REST connector: RJ45 + SIM
• Data rates RS485: up to 115200 bps
• Data rates HTTP/REST: 10/100 Base-T Autosensing
• Power supply: 12..35V DC / 8..24V AC
• Power consumption: 5 W/VA at 24V DC
• Power supply connector: 2way 5mm terminal block
• Operating temperature: -40°C to +85°C
• Dimensions: 70x60x95 mm (DxWxH)
• Weight: 200 g approx
• Mechanical fixing: 35 mm DIN rail mounting
• Software: SW67G07
• Order code: HD67G07-5-G43-VPN-B2

If you need a reliable way to connect Modbus Slave devices on the RS485 side with HTTP/REST communication in client mode in industrial environments, with additional SIM LTE connectivity and VPN support, HD67G07-5-G43-VPN-B2 is a strong choice for modern automation, system integration and telemetry projects.