Wiznet makers

Overview

Modern buildings increasingly require lighting systems that go beyond basic illumination. Today’s infrastructure demands energy efficiency, centralized management, and intelligent automation as part of a broader smart building ecosystem.

To support these requirements, an industrial lighting control device was developed using Power over Ethernet (PoE+) and the WIZnet W5500 Ethernet controller. The device enables industrial lighting equipment to connect directly to building automation networks, allowing centralized monitoring and control through a building management system (BMS).

By combining reliable wired Ethernet connectivity with PoE-based power delivery, the system simplifies installation while ensuring stable communication within smart building environments.

Background

Building Management Systems (BMS) integrate various infrastructure components such as lighting, HVAC, security, and energy management into a unified control platform.

Lighting systems play a particularly important role in modern buildings because they directly affect:

• Energy consumption optimization
• Workplace comfort and productivity
• Automated building operation

Industry trends highlighted at major exhibitions such as Light + Building, the world’s leading trade fair for lighting and building services technology, emphasize the growing convergence between lighting systems and building automation platforms.

However, traditional lighting control systems often face several limitations:

• Separate wiring for power and network communication
• Complex installation processes
• Limited integration with centralized management systems

As a result, there is increasing demand for solutions that provide both power delivery and reliable network communication through a unified infrastructure.

Solution

To address these challenges, an industrial lighting control device based on PoE+ and the WIZnet W5500 Ethernet controller was implemented.

The W5500 connects to the system MCU through a simple SPI interface and provides reliable Ethernet connectivity. The device collects operational information from lighting equipment and transmits it through the Ethernet network to the building automation platform.

By utilizing PoE+ technology, both power and network communication are delivered through a single Ethernet cable. This significantly reduces installation complexity while improving system scalability within large buildings.

The device enables several key functions within the building automation infrastructure:

• Monitoring lighting equipment status
• Transmitting operational data to the building management system
• Enabling remote control of lighting systems
• Supporting energy management and automation platforms

System Architecture

The system architecture consists of industrial lighting equipment, a lighting control device, and a centralized building automation platform.

Each lighting control device communicates with the building management system via Ethernet, enabling centralized monitoring and automated control of lighting infrastructure across the building.

Key Technologies

W5500 Ethernet Controller

The W5500 is a hardwired TCP/IP embedded Ethernet controller designed for reliable network connectivity in embedded systems.

Key features include:

• Hardware TCP/IP stack offload
• SPI interface for easy MCU integration
• Reliable wired Ethernet communication
• Reduced firmware complexity

By offloading TCP/IP processing to hardware, the W5500 allows the MCU to focus on application-level tasks while maintaining stable network communication.

Power over Ethernet (PoE+)

PoE+ technology enables both electrical power and network data to be delivered through a single Ethernet cable.

Key advantages include:

• Simplified installation
• Reduced cabling infrastructure
• Flexible device placement
• Lower maintenance costs

In large commercial buildings and industrial facilities, PoE-based lighting systems significantly simplify infrastructure deployment while supporting scalable automation systems.

Benefits

By integrating PoE+ power delivery with W5500 Ethernet connectivity, the system provides several important benefits:

• Reliable wired communication for lighting control systems
• Simplified installation using a single Ethernet cable
• Seamless integration with building automation platforms
• Centralized monitoring and energy management capabilities
• High reliability suitable for industrial environments

These capabilities allow building operators to manage lighting systems more efficiently while supporting broader smart building automation strategies.

Conclusion

As smart building technologies continue to evolve, lighting systems are becoming an integral part of connected infrastructure.

By combining WIZnet’s W5500 Ethernet controller with PoE+ technology, industrial lighting control devices can deliver reliable connectivity, simplified installation, and seamless integration with building automation platforms.

This approach provides a scalable and efficient foundation for modern smart buildings and industrial facilities.