HD67672-MSTP-2-A1 BACnet MSTP slave to RS-232 Modbus slave converter for automation

Industrial BACnet MSTP slave to RS-232 Modbus slave converter, housing type A (slim), DIN rail mount.

HD67672 allows you to connect a BACnet Master (for example a Supervisory System, etc) with a Modbus Master (for example a PLC, HMI, etc) in order to exchange the informations between the networks. Converter is easy to configure thanks to free SW67672 software. The device acts as a BACnet MSTP slave on one side and as a RS-232 Modbus slave on the other, enabling two independent master devices to communicate through structured data mapping. This architecture is particularly useful in Building Management Systems (BMS) and industrial SCADA applications, where supervisory controllers often need to integrate legacy Modbus equipment that relies on RS-232 interfaces.

Configuration:

Thanks to the SW67672 software on your PC you can:

• Define the parameters of BACnet line
• Define the parameters of Modbus line
• Define BACnet objects that contains the data sent by the Master Modbus
• Define BACnet objects that contains the data to sent to the Master Modbus
• Update the device

The SW67672 configuration tool provides a straightforward way to define BACnet objects corresponding to RS-232 Modbus slave registers. System integrators can quickly map input registers, holding registers or coils into BACnet points, allowing transparent monitoring and control. The software also allows firmware upgrades and diagnostics, ensuring that the gateway remains up to date and reliable over the product’s lifecycle. This ease of use is one of the main reasons why the HD67672 is widely deployed in both small and large-scale automation projects.

Characteristics:

• Up to 2048 BACnet objects (Read+Write)
• Triple isolation between BACnet - Power Supply, BACnet - Modbus, Power Supply - Modbus
• Bi-directional information exchange between BACnet bus and Modbus bus
• Mountable on 35mm Rail DIN

Thanks to its slim type A housing, the converter is easy to install even in control panels with limited space. The triple galvanic isolation ensures maximum protection against electrical disturbances, ground loops and electromagnetic interference, making it reliable in harsh industrial environments. With support for up to 2048 BACnet objects, the HD67672 is suitable for medium to large installations requiring extensive data exchange between BACnet MSTP masters and RS-232 Modbus masters. This ensures long-term scalability and reduces the need for additional hardware.

Specifications:

• Ports: 1x RS-485; 1x RS-232; 1x Ethernet (programmable port)
• Serial protocol: RS-232 Modbus slave
• BACnet protocol: BACnet MSTP Slave
• Data Rates Serials: Up to 115200 bps
• Data Rates BACnet: Up to 115200 bps
• Serials connector: D-sub connector, type DE-9 Male
• BACnet connector: 3way 5mm removable screw terminal
• Power supply: 8 ~ 24VAC; 12 ~ 35VDC
• Power supply connector: 2way 5mm terminal block
• Operating temperature: -40°C to +85°C (-40°F to +185°F)
• Dimensions: 120 mm x 23 mm x 107 mm (DxWxH)
• Weight: 200g approx
• Mechanical fixing: 35mm DIN Rail mount
• Software: SW67672
• ORDER CODE: HD67672-MSTP-2-A1

The inclusion of both RS-485 and RS-232 serial ports, along with an Ethernet service port, provides great flexibility during deployment. This allows integrators to connect legacy devices with RS-232 communication while still being able to perform advanced configuration and diagnostics via Ethernet. The wide operating temperature range (-40°C to +85°C) guarantees reliable performance in demanding conditions such as outdoor cabinets, factories or technical rooms with unstable climate. Overall, the HD67672 is a versatile protocol bridge that simplifies integration tasks and increases interoperability between automation systems.

Configurator – Software SW67672 FREE DOWNLOAD

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