INBACRTR0320000 – BACnet MS/TP to BACnet IP Router

Industrial BACnet MS/TP to BACnet IP Router - INBACRTR0320000.

INBACRTR0320000 is a professional, multi-network BACnet router designed to seamlessly connect BACnet MS/TP (RS-485) segments with BACnet IP infrastructure. The device complies with UL and BTL requirements, ensuring reliability and full interoperability in commercial HVAC, BMS, and SCADA installations. The router exposes all BACnet objects of connected devices transparently, regardless of the underlying transport layer.

The router operates as a full BACnet Router compliant with Clause 6 and Annex J of the BACnet standard. It supports BACnet/IP communication, BACnet MS/TP master functionality, BBMD operation, and Foreign Device registration, enabling routing of BACnet traffic across multiple IP subnets, wide-area networks, and VPN connections without losing broadcast functionality.

From a practical perspective, this means the router can be deployed both in simple local BACnet IP networks and in distributed architectures spanning multiple subnets, VLANs, or VPN tunnels. BBMD and Foreign Device support ensure correct handling of BACnet/IP broadcasts even when devices are located behind NAT routers or in remote locations.

Thanks to a routing architecture based directly on the BACnet standard, INBACRTR0320000 does not require point mapping or the creation of virtual objects. Data from the MS/TP network is exposed natively on the BACnet IP side, eliminating vendor lock-in, reducing commissioning time, and minimizing configuration errors in large-scale BMS projects.

The router supports full APDU segmentation (SEGMENTED-BOTH) with a window size of 16, which is critical in installations with a large number of BACnet objects. The maximum APDU size is 1476 bytes for BACnet IP and 480 bytes for BACnet MS/TP, ensuring stable handling of ReadPropertyMultiple requests and communication with large controllers and enterprise-class BMS platforms without timeouts.

Key features and benefits:

• 32 MS/TP devices at full load – ideal for medium-sized floor or zone-based networks.
• BBMD mode (BACnet/IP Broadcast Management) – easy routing of broadcasts across routers and NAT.
• BACnet Explorer built into the firmware – fast device discovery, identification, and testing without additional tools.
• Diagnostic signals (frame statistics, collisions, timeouts) available as BACnet objects and in Intesis MAPS software.
• Configuration and firmware updates via Intesis MAPS or web interface – free engineering tools simplify commissioning.
• Galvanically isolated RS-485 interface – protection against ground loops and EMC disturbances.
• Compact enclosure 93 × 53 × 58 mm suitable for DIN rail, wall, or control cabinet mounting.
• Low power consumption of 1.7 W and wide power supply range 9–36 V DC / 24 VAC.
• 36-month manufacturer warranty – long-term investment protection.

The router operates as a BACnet MS/TP master with configurable Max Master and Max Info Frames parameters, allowing precise tuning of the RS-485 network to match the characteristics of connected controllers. In practice, this helps reduce collisions, improve communication determinism, and ensure stable operation even in multi-vendor MS/TP networks.

A distinctive feature of the device is the availability of advanced communication diagnostics as native BACnet objects. TX/RX packet counters for BACnet IP and MS/TP, token statistics, CRC errors, and connection states are directly visible in the BMS as analog and binary objects, significantly simplifying commissioning and troubleshooting without external protocol analyzers.

Detailed technical specifications:

• MS/TP port: 1 × EIA-485, 3-pin terminal block (A, B, GND), baud rates 9.6 – 76.8 kb/s
• Ethernet port: 1 × RJ45 10/100 Mbps with LNK/ACT LEDs
• Power supply: 9–36 V DC or 24 VAC 50/60 Hz • consumption 0.14 A / 1.7 W
• Enclosure: PC UL 94 V-0 • dimensions 93 × 53 × 58 mm • IP20
• Mounting: DIN rail EN60715 TH35 or wall mounting
• Operating conditions: 0 °C … 60 °C • 5 % … 95 % RH (non-condensing)

Applications: consolidation of distributed HVAC controllers, connection of floor-level MS/TP networks to a central BMS, modernization of buildings using both BACnet IP and MS/TP devices, and traffic segmentation to improve network performance. Thanks to BBMD functionality, the router also enables secure BACnet communication over VPN or wide-area networks.

INBACRTR0320000 is widely used in office buildings, hotels, hospitals, industrial facilities, and campuses where reliable interconnection of multiple BACnet segments and full data transparency at the supervisory level are required. It is designed for long-term operation, ease of service, and future system expansion.