HD67G03-5-G43-VPN-B2 RS485 to HTTP/REST Client converter with LTE and VPN

HD67G03-5-G43-VPN-B2 connects RS485 devices with HTTP/REST Client communication through LAN, SIM LTE, and VPN.

HD67G03-5-G43-VPN-B2 is an industrial RS485 / HTTP/REST Client - Converter with VPN, designed to integrate devices communicating through RS485 with modern data exchange systems operating in a local network and through mobile connectivity. This model works well in telemetry applications, remote monitoring systems, automation installations, and projects where classic serial communication must be connected with network services.

The HD67G03-5-G43-VPN-B2 variant offers LAN and SIM LTE connectivity, and additionally supports VPN Service, which increases remote data access security and simplifies communication with devices operating outside the local plant network. It is a practical solution for system integrators, machine builders, and maintenance teams, allowing field devices to be connected with higher-level systems without building a complex intermediate infrastructure.

HD67G03-5-G43-VPN-B2 allows precise configuration of HTTP/REST communication parameters, serial line parameters, the server list, and communication endpoints. As a result, the converter can be adapted to a specific application, whether its task is to transfer measurement data, operating states, alarms, or other process information to a higher-level system.

The device supports RS485 data rates up to 115200 bps and 10/100 Base-T Autosensing Ethernet communication. An additional advantage is the electrical isolation between Ethernet and power supply, which supports stable operation in industrial environments. The compact housing type B, 35 mm DIN rail mounting, and wide operating temperature range from -40°C to +85°C make this model suitable for demanding industrial installations.

In the G43 version, the manufacturer uses an LTE module with Micro-SIM support and an SMA Female connector for the antenna. For RS485 communication, line termination with a 120 Ω resistor is also supported, which helps ensure correct bus transmission and improves communication stability in extended installations.

HD67G03-5-G43-VPN-B2 Product features.

• RS485 / HTTP/REST Client conversion for integrating serial devices with network services.
• LAN and SIM LTE connectivity for local and remote operation.
• VPN Service increases communication and remote access security.
• RS485 port allows connection of devices using industrial serial communication.
• HTTP/REST Client communication enables integration with services and higher-level systems.
• RS485 data rate up to 115200 bps for efficient data exchange.
• 10/100 Base-T Autosensing Ethernet for stable network operation.
• Configurable servers and endpoints help adapt the device precisely to the project.
• Electrical isolation between Ethernet and power supply improves operational safety.
• Micro-SIM support enables communication through the LTE mobile network.
• SMA Female connector allows LTE antenna connection.
• RS485 line termination with 120 Ω resistor supports reliable bus communication.
• 8..24V AC and 12..35V DC power supply provides greater design flexibility.
• Operating temperature from -40°C to +85°C allows use in harsh conditions.
• DIN rail mounting and housing type B simplify installation inside a control cabinet.

HD67G03-5-G43-VPN-B2 Technical specification.

• Device type: RS485 / HTTP/REST Client - Converter with VPN
• Order code: HD67G03-5-G43-VPN-B2
• Service: VPN Service
• Connectivity: LAN + SIM LTE
• Ports: 1x Serial, 1x Ethernet, SIM Card
• Serial protocol: RS485
• Ethernet + LTE protocol: HTTP/REST Client
• RS485 connector: 3way 5mm terminal block
• HTTP/REST connector: RJ45 + SIM
• LTE antenna connector: SMA Female
• SIM card type: Micro-SIM
• RS485 data rate: up to 115200 bps
• HTTP/REST data rate: 10/100 Base-T Autosensing
• Power supply: 8..24V AC; 12..35V DC
• Power supply connector: 2way 5mm terminal block
• Operating temperature: -40°C to +85°C
• Dimensions: 70x60x95 mm (DxWxH)
• Weight: approx. 200 g
• Mechanical fixing: 35 mm DIN rail mounting
• Housing: type B
• Software: SW67G03

The device is configured using SW67G03 software. This tool allows configuration of HTTP/REST communication parameters, serial line parameters, the server list, and endpoints, and also enables device updates, which speeds up deployment in a real installation.

HD67G03-5-G43-VPN-B2 is a strong choice for projects where RS485 devices must be connected with HTTP/REST communication while maintaining flexible access through Ethernet and mobile connectivity based on a SIM card, with additional transmission security through VPN. It is a compact, practical, and industrial-ready solution for modern data integration.