The ENEFFEN BACnet Gateway TX4 RX4 is a high-performance, industrial-grade protocol converter designed to integrate a wide range of Modbus RTU/ASCII devices into a BACnet building automation network. This powerful gateway eliminates communication barriers, allowing you to connect energy meters, HVAC equipment, VFDs, sensors, and other Modbus sub-systems directly into your central BACnet-based Building Management System (BMS) or SCADA platform.
Ideal for system integrators, facility managers, and engineers, the TX4 RX4 ensures seamless data exchange, enhanced visibility, and centralized control for smarter, more efficient building operations.
Key Features & Benefits
-
Bidirectional Protocol Conversion:Â Effortlessly translates data between Modbus RTU/ASCII (Slave/Master) and BACnet IP / BACnet MS-TP (Client/Server). Enables both monitoring and control from your BMS.
-
Dual BACnet Ports: Features both BACnet IP (for Ethernet networks) and BACnet MS-TP (for RS-485 field buses), providing maximum flexibility for integration into new or existing BMS architectures.
-
Powerful Modbus Connectivity: Acts as a Modbus Master to poll data from multiple slave devices (up to 32 devices) or as a Modbus Slave to be polled by a master system, offering versatile integration scenarios.
-
Extensive Data Point Mapping:Â Supports the mapping of a wide range of Modbus data types (Coils, Discrete Inputs, Input Registers, Holding Registers) to standard BACnet object types (Analog Input/Output/Value, Binary Input/Output/Value, Multi-State Input/Output/Value).
-
Easy Configuration & Management:Â Includes user-friendly configuration and debugging tools (typically Windows-based software) for simple setup, point mapping, and network diagnostics, reducing installation time and complexity.
-
Robust Industrial Design:Â Built for reliability in demanding environments, featuring a wide operating temperature range, DIN-rail mounting form factor, and protection against electrical noise and surges on communication lines.
-
Enhanced Energy Monitoring & HVAC Control:Â Perfect for integrating third-party energy meters (ENEFFEN, and others), chillers, boilers, and air handling units (AHUs) into a unified BACnet system for comprehensive Energy Management (ENEFFEN) and HVAC control.
Technical Specifications
| Category | Specification |
|---|---|
| BACnet Interfaces | 1 x BACnet IP (10/100M Ethernet RJ45), 1 x BACnet MS-TP (RS-485) |
| Modbus Interfaces | 2 x Isolated RS-485 ports (TX4, RX4 labeling) for Modbus RTU/ASCII |
| Protocols | BACnet: B-ASC (Advanced Application Controller) profile compliant with BACnet Standard 135. Modbus: RTU, ASCII (Slave or Master mode) |
| Power Supply | Typically 12-36V DC or 24V AC (refer to official datasheet) |
| Mounting | Standard DIN-Rail (35mm) |
| Configuration | Via dedicated configuration software over Ethernet or USB (model dependent) |
| Typical Applications | Energy Meter Integration, HVAC System Integration, Industrial Automation, Facility Management |
Primary Applications
-
Building Management Systems (BMS):Â Integrate non-BACnet building equipment into systems like Siemens Desigo, Johnson Controls Metasys, Schneider Electric EcoStruxure, or Tridium Niagara.
-
Energy Management Systems (EMS):Â Connect Modbus energy meters (for electricity, water, gas, steam) to a central platform for real-time monitoring, cost allocation, and sustainability reporting.
-
HVAC/R Systems:Â Interface with chillers, boilers, heat pumps, VFDs (Variable Frequency Drives), and packaged units that use Modbus communication.
-
Industrial IoT (IIoT):Â Bring data from industrial sensors, PLCs, and other Modbus devices into a unified building or enterprise network.
-
Retrofitting Projects:Â Modernize existing facilities with legacy Modbus equipment by connecting them to a new, standards-based BACnet BMS.
