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The Babel Buster BB2-7010 Modbus to BACnet IP gateway allows Modbus devices to communicate with BACnet IP devices. BACnet objects may be read as Modbus registers, and Modbus registers may be read as BACnet objects. The Modbus to BACnet IP gateway acts as a translator between the two protocols.


Key Features

  • Connect BACnet IP Devices to a Modbus RTU or TCP Network
  • Subscribe to COV on Changes from Modbus or BACnet
  • Up to 1000 BACnet Objects and 1000 Modbus Holding Registers
  • BACnet Input, Value, Output objects for Analog, Binary, Multistate
  • Optional mapping of Modbus Registers as Coil, Discrete, Input, Holding
  • Optional SNMP client and server, includes trap send on threshold
  • FCC, CE Mark, UL 916 Listed
  • Software Included, No Drivers to Buy


  • Read/Write any standard Modbus register via BACnet
  • Read/Write any standard BACnet object via Modbus
  • Support for up to 200 WiFi Sensors (specific models)
  • Bidirectional communication between BACnet and Modbus
  • Supports Modbus coils, input registers, holding registers
  • Single or double Modbus registers
  • Signed, unsigned, IEEE 754 Modbus registers
  • Supports Mod-10 format (2, 3, 4-register)
  • Modbus register mapping configured via web interface
  • Modbus registers may be scaled (x10, x0.1, etc.)
  • Modbus (master) polling interval configurable per point
  • Commandable BACnet objects implement priority array
  • Standard hardened EIA-485 transceiver for Modbus RTU
  • Optional isolated EIA-485 transceiver for Modbus RTU
  • Optional RS-232 transceiver (in place of RS-485)
  • 10/100BaseT Ethernet for BACnet IP and Modbus TCP
  • Powered by 10-30VDC or 12-24VAC 50/60 Hz
  • Power Consumption: 0.3A @ 24VDC
  • DIN rail mounting, 100mm H x 70mm W x 60mm D
  • Pluggable screw terminal block for power & RTU network
  • Operating temperature -40°C to +85°C
  • Humidity 5% to 90% non-condensing
  • FCC Class A, CE Mark
  • Listed to UL 916 and (Canadian) C22.2 No. 205-M1983