HD67G11-G43-B2 – Modbus TCP Slave to HTTP/REST Client converter with SIM LTE

HD67G11-G43-B2 – Modbus TCP Slave and HTTP/REST Client integration with SIM LTE.

HD67G11-G43-B2 is an industrial Modbus TCP Slave / HTTP/REST Client converter by ADFweb, designed to integrate automation systems based on Modbus TCP with applications, servers and platforms that communicate through HTTP/REST. On the industrial communication side, the device operates as a Modbus TCP Slave, so it can be accessed by a supervisory Modbus TCP Master in an Ethernet network. On the web communication side, the converter works as an HTTP/REST Client, allowing process data, machine states, alarms, counters or measured values to be sent to an external HTTP/REST server. The HD67G11-G43-B2 variant is equipped with LAN + SIM LTE connectivity, which distinguishes it from the basic LAN version and allows the device to be used where cellular communication is required. This model does not include eSIM or VPN service, so it is intended for applications where wired Ethernet communication and a physical LTE SIM card are sufficient.

Modbus TCP Slave / HTTP/REST Client converter with LAN + SIM LTE connectivity

HD67G11-G43-B2 enables the connection of classic industrial communication with modern data exchange based on HTTP/REST. In practice, this means that values available on the Modbus TCP side can be transferred to IT applications, IIoT systems, reporting tools, supervisory platforms, data acquisition systems or custom software developed for a specific installation. The device is not a simple wiring adapter, but a configurable communication gateway in which the Modbus TCP parameters, HTTP/REST parameters, accessible endpoints and transmitted payload structure are defined by the user. This makes it possible to adapt the converter to a specific application, data type and communication method expected by the higher-level system. Built-in SIM LTE support increases deployment flexibility, because the device can be used in distributed facilities, telemetry cabinets, field installations or locations where access to wired network infrastructure is limited. At the same time, the Ethernet RJ45 port allows LAN communication to be used wherever it is available.

Ethernet RJ45, SIM LTE and industrial data communication

The HD67G11-G43-B2 has 1 Ethernet RJ45 port used for device configuration, Modbus TCP communication and HTTP/REST communication. The Ethernet interface supports 10/100 Base-T Autosensing, allowing operation in standard industrial and technical Ethernet networks. On the HTTP/REST side, the G43 variant also uses a SIM LTE module, making it suitable for applications where data must be transmitted through a cellular network. According to the manufacturer’s documentation, G43 versions use an LTE module and a physical Micro-SIM card, while the antenna connector is SMA Female. This is important when designing the installation, because signal conditions, antenna selection and mounting inside a cabinet or field enclosure should be considered. The converter also provides electrical isolation between Ethernet and Power Supply, improving reliability in industrial environments and reducing the influence of disturbances between the communication section and the power section.

HTTP/REST payload definition and flexible data mapping

One of the key functions of the HD67G11-G43-B2 is the possibility to define the payload structure for HTTP/REST communication. Data from the Modbus area can be linked to the HTTP/REST message by using templates that define the variable format, the starting bit in the internal memory and the data size. The software supports formats such as unsigned integer, signed integer, float, binary, string, hexadecimal and Base64. This makes it possible to prepare data in the format expected by the HTTP/REST server, including JSON-like structures or a layout required by a specific application. Such functionality is useful for transmitting measured values, counters, alarms, operating states, production parameters or diagnostic data from the automation system to external software. The configuration does not require custom firmware development, because all key settings are defined using the dedicated configuration tool.

Product features

• Modbus TCP Slave / HTTP/REST Client conversion in one industrial device.
• Variant with LAN + SIM LTE connectivity.
• 1 Ethernet RJ45 port for configuration, Modbus TCP communication and HTTP/REST communication.
• Support for a physical SIM card for LTE communication.
• Operation on the industrial side as a Modbus TCP Slave.
• Operation on the web communication side as an HTTP/REST Client.
• Support for 10/100 Base-T Autosensing for Modbus TCP and HTTP/REST communication.
• Configuration of HTTP/REST parameters, Modbus TCP parameters and accessible endpoints.
• Template-based HTTP/REST payload creation for data taken from the Modbus area.
• Support for data formats: unsigned integer, signed integer, float, binary, string, hexadecimal and Base64.
• Electrical isolation between Ethernet and Power Supply.
• Wide power input range: 8..24V AC and 12..35V DC.
• Type B housing suitable for 35 mm DIN rail mounting.
• Operating temperature range: -40°C/+85°C (-40°F/+185°F).
• LED diagnostics for device state, Modbus TCP communication, HTTP/REST communication and error state.

Technical specification

• Order code: HD67G11-G43-B2
• Device type: Modbus TCP Slave / HTTP/REST Client - Converter
• Connectivity: LAN + SIM LTE
• Housing: type B, Modulbox 4M
• Connectors type: Terminal Blocks Connectors, Fixed Screw Terminal
• Ports: 1x Ethernet, SIM Card
• Modbus TCP protocol: Modbus TCP Slave
• Ethernet + LTE protocol: HTTP/REST Client
• Modbus TCP connector: RJ45
• HTTP/REST connector: RJ45 + SIM
• Data Rates Modbus TCP: 10/100 Base-T Autosensing
• Data Rates HTTP/REST: 10/100 Base-T Autosensing
• Power supply: 8..24V AC, 12..35V DC
• Power supply connector: 2-way 5 mm terminal block
• Consumption at 24V DC: 5 W/VA
• Operating temperature: -40°C/+85°C (-40°F/+185°F)
• Dimensions: 70 x 60 x 95 mm (D x W x H)
• Weight: 200g approx
• Mechanical fixing: 35 mm DIN rail mounting
• Software: SW67G11
• Order code: HD67G11-G43-B2

Configuration and diagnostics

The HD67G11-G43-B2 converter is configured using SW67G11 software. The program allows the user to define HTTP/REST communication parameters, set the Modbus TCP line parameters, define the list of endpoints accessible from the HTTP/REST side and update the device. The software works with MS Windows systems and requires .NET Framework 4. The ADFweb Discovery Tool can be used to find the device in the network and check its IP address. The converter also includes a recovery button, which allows the device to be switched into Recovery Mode if an incorrect firmware update or another problem affects normal operation. Four LEDs provide information about device state, Modbus TCP communication, HTTP/REST communication and error state.

ADFweb provides technical support for its devices and access to documentation and configuration tools for the corresponding product family. The product is covered by the manufacturer’s standard warranty, and service procedures are handled according to ADFweb support and return policy.