GW-2139M Modbus TCP to BACnet MS/TP Gateway


Key Features

  • Read/Write standard BACnet objects via modbus
  • Configurable BACnet MS/TP master
  • Configurable Modbus TCP Server
  • Simple data translation allows you to manipulate data as it passes between protocols
  • Supports BACne AI, AO, AV, BI, BO, BV, MSI, MSO, MSV Object Types
  • Supports Modbus “coils”, input registers, holding registers
  • BACnet object properties mapping configured via Modbus register


The ICP DAS GW-2139M contains a large number of BACnet objects (AI, AO, AV, BI, BO, BV, MSI, MSO, MSV) that gives user the flexibility in mapping Modbus TCP registers to any combination of BACnet objects. BACnet interoperability building blocks (DS-RP-A, DS-RPM-A, DS-WP-A, DS-WPM-A, DM-DDB-A, DM-DOB-A, DM-DCC-A, DM-RD-A) are fully supported. All the data transfer is configurable via the supplied ICP DAS Utility.

The ICP DAS GW-2139M is a network gateway that allows Modbus TCP client devices to access BACnet MS/TP network as a BACnet MS/TP master. The BACnet Master Slave Token Passing (MS/TP) protocol is used to relay and exchange information between building devices.