HD67712-IP-4-A1 BACnet IP master to RS-485 Modbus slave converter for BMS and automation

Industrial BACnet IP master to RS-485 Modbus slave converter, housing type A (slim), DIN rail mount.

HD67712 is a BACnet Master / Modbus Slave Converter and it allows you to connect some BACnet slaves with a Modbus Master (for example a PLC, HMI). Converter is easy to configure thanks to free SW67712 software. The device works as a BACnet IP master on the Ethernet side and as a RS-485 Modbus slave on the serial side, which makes it a reliable bridge for integrating building automation and industrial control systems. Its compact slim housing type A and DIN rail mounting make it easy to install even in cabinets with limited space, while maintaining robust industrial reliability.

Configuration:

Thanks to the SW67712 software on your PC you can:

• Define the parameters of BACnet line
• Define the parameters of Modbus line
• Define the BACnet data that the converter reads/writes
• Update the device

The SW67712 software provides an intuitive configuration environment for mapping RS-485 Modbus slave registers to BACnet IP master objects. This allows BACnet supervisory controllers to manage, monitor and control Modbus field devices directly. Additionally, the software includes diagnostic tools and supports firmware upgrades, ensuring the converter remains adaptable to evolving system requirements and protocol standards.

Characteristics:

• Up to 512 BACnet objects in reading and 512 objects in writing
• Triple isolation between Serial - Power Supply, Serial - Ethernet, Ethernet - Power Supply
• Bi-directional information exchange between Modbus bus and BACnet bus
• Mountable on 35mm DIN rail

The converter supports up to 1024 BACnet objects in total (512 read + 512 write), making it suitable for medium and large-scale integration projects. Its triple galvanic isolation enhances reliability by preventing interference and protecting both BACnet and Modbus networks. Bi-directional information flow guarantees that BACnet IP masters can not only read data but also send control commands to Modbus devices, enabling seamless integration in HVAC control, energy management, lighting automation, and process monitoring.

Specifications:

• Ports: 2x Ethernet; 1x RS-485
• Serial protocol: RS-485 Modbus slave
• BACnet protocol: BACnet IP master
• Data Rates Serials: Up to 115200 bps
• Data Rates BACnet: 10/100 Base-T Autosensing
• Serials connector: 3way 5mm removable screw terminal
• BACnet connector: RJ45
• Power supply: 8 ~ 24V AC; 12 ~ 35V DC
• 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: SW67712
• ORDER CODE: HD67712-IP-4-A1

Dual Ethernet ports provide greater flexibility when integrating into BACnet IP networks, while the RS-485 Modbus slave interface ensures compatibility with a wide range of field devices. The wide operating temperature range from -40°C to +85°C allows installation in harsh environments, both industrial and outdoor. Compact size and lightweight design (~200 g) make it easy to handle during installation and servicing, while maintaining high durability for 24/7 operation.

Configurator – Software SW67712 FREE DOWNLOAD