How the 10BASE-T1L building controller helps achieve a sustainable building management system

This article focuses on the benefits of using Ethernet direct digital controllers (DDCs) (also known as building controllers) in building management systems (BMSs) and explains how to integrate the 10BASE-T1L protocol into a typical BMS architecture.

10BASE-T1L has data transfer rates of 10 Mbps, supports a variety of topologies, and can be powered over a single twisted pair, providing seamless Ethernet connectivity to DDC controllers and edge nodes in point-to-point, ring, and linear network configurations. It provides real-time control and overcomes the limitations of previous protocols, while it supports an almost unlimited number of edge nodes. Because it can reuse existing single twisted pair wiring, it supports long-distance data transmission up to 1 km, making it an ideal improved solution for existing BMS. It eliminates the need for power-hungry gateways and supports seamless cloud connectivity. This is a real help for users who want to adopt the latest BMS technology but are worried about the adverse impact on the energy efficiency of the building.

DDC supporting T1L

DDC systems are crucial to modern building management and can provide real-time monitoring of various building systems. As technology advances, Ethernet-connected DDC systems will become more common, further improving building efficiency and safety. Analog Devices' ADIN1100 PHY, ADIN1110 MAC PHY, and ADIN2111 dual-port switches are ideal solutions for adding 10BASE-T1L to DDC systems. The technology transmits process values, configuration information, software updates and diagnostic information, making it easier to manage and maintain building systems. The 10BASE-T1L is available in cable lengths up to 1 km and has diagnostic capabilities to resolve any faults in the system quickly and efficiently. 10BASE-T1L integrates with software protocol stacks such as Modbus IP and BACnet IP to provide a comprehensive solution for industrial automation systems and will promote efficient data collection, equipment control and system monitoring. Figure 1 highlights how 10BASE-T1L products can be integrated into heating, ventilation and air conditioning (HVAC) controllers and room controllers to communicate with multiple room or building controllers in a ring or line topology.