BACnet Gateway

The GW-BAC1 is an external, high-performance Building Automation multi-protocol gateway designed by Unitronics. It enables Unitronics products to connect to various building automation protocols. Specifically, it supports BACnet MS/TP and BACnet/IP. This gateway facilitates communication between Unitronics PLCs and BACnet networks, making it a valuable tool for integrating automation systems.


Purpose and Functionality:

  • The GW-BAC1 acts as a bridge between Unitronics programmable logic controllers (PLCs) and BACnet-based building automation systems.
  • It facilitates communication by translating data between BACnet and Unitronics protocols.
  • Specifically, it supports both BACnet MS/TP (Master-Slave/Token-Passing) and BACnet/IP (Internet Protocol) communication.

Key Features:

  • Multi-Protocol Support: The gateway allows Unitronics devices to seamlessly connect to BACnet networks, enabling interoperability.
  • BACnet MS/TP and BACnet/IP: It supports both BACnet communication modes, making it versatile for various applications.
  • High Performance: The GW-BAC1 ensures reliable and efficient data exchange.
  • Easy Configuration: Users can set up parameters and mappings via intuitive configuration tools.
  • LED Indicators: Visual status indicators provide real-time feedback on communication status.

Installation and Use:

  • Mount the GW-BAC1 near the Unitronics PLC or controller.
  • Configure the gateway using the provided software or web interface.
  • Map Unitronics data points to BACnet objects (e.g., analog inputs, digital outputs).
  • Monitor and manage communication through the LED indicators and diagnostic tools.


  • Building automation: Connect Unitronics controllers to HVAC, lighting, and security systems.
  • Energy management: Monitor and control energy usage in commercial and industrial facilities.
  • Integration: Enable seamless data exchange between Unitronics devices and other BACnet-compliant equipment.


Document Description Download
GW-BAC1 User Guide PDF Link

Technical Drawings