Many commercial buildings face the same challenge during digital transformation:
The HVAC system works well — but the data is trapped.
Replacing an entire HVAC infrastructure is expensive, disruptive, and often unnecessary.
The smarter approach is to connect existing equipment, unify data, and bring legacy systems into modern building management platforms.
This is exactly what happened in a 120,000㎡ shopping mall retrofit project.
The shopping center had been operating for years with HVAC equipment from different manufacturers:
Each subsystem worked independently.
However, when the building owner wanted to upgrade to a new BACnet-based Building Management System (BMS), several problems appeared:
The existing equipment used different communication standards:
The BMS platform could not directly communicate with all devices.
Facility engineers had to manually check:
This increased labor costs and delayed troubleshooting.
The HVAC system represented years of investment.
Replacing PLCs, controllers, and meters would mean:
The customer needed a retrofit solution, not a rebuild.
The project selected multiple units of BA107L (6 Serial Ports + 4G Wireless Version) as the communication bridge between legacy HVAC equipment and the new BACnet platform.
The gateway works as a protocol integration layer:
Legacy HVAC Devices → BA107L → BACnet BMS Platform
Instead of replacing existing controllers, BA107L collects data from different devices and converts them into a unified format for the building management system.
BA107L provides 6 independent serial ports, allowing different field devices to be integrated in one solution.
The gateway supports communication with various industrial and building automation devices, including:
The configuration software allows engineers to select protocols, device brands, models, and data points according to the actual site requirements.
The biggest advantage of retrofit projects is:
Keep existing equipment. Upgrade intelligence.
BA107L can provide collected data through BACnet/IP or BACnet MS/TP, allowing traditional HVAC equipment to communicate with modern BMS platforms.
The building platform can now monitor:
All from one centralized system.
For large commercial buildings, installation locations are often distributed across mechanical rooms, floors, and equipment areas.
The 4G version provides flexible networking options without requiring complex network deployment. The gateway supports 4G configuration and remote management functions for easier maintenance.
Engineers can reduce unnecessary site visits and improve response efficiency.
Traditional integration projects often require custom programming.
BA107L simplifies deployment through graphical configuration:
The gateway supports configuration, monitoring, logging, and remote management functions to help engineers diagnose communication issues faster.
After deployment:
✅ Multiple HVAC brands were integrated into one platform
✅ Existing PLCs and controllers remained unchanged
✅ BACnet BMS successfully collected all critical data
✅ Manual inspection workload was reduced
✅ Fault detection and energy management became more efficient
The building moved from isolated equipment management to centralized intelligent operation.
Thousands of commercial buildings worldwide are facing the same problem:
Their HVAC systems are reliable, but their data is isolated.
The key challenge is not installing new equipment.
It is connecting what already exists.
With the right HVAC gateway, legacy buildings can become smarter, more efficient, and ready for modern BMS platforms — without expensive reconstruction.
