The BL211 OPC UA Coupler is a new-generation modular I/O system developed by Beilai Technology based on next-generation Industrial Internet architecture. Designed with a plug-and-play structure, tool-free installation, and high stability, the BL211 enables seamless integration between field devices and upper-level IT systems.
By supporting the standard OPC UA protocol, the BL211 allows direct connection to industrial platforms such as SCADA, MES, MOM, and ERP systems, providing a reliable bridge between OT (Operational Technology) and IT (Information Technology) layers. It is an ideal I/O solution for Industrial IoT, Industry 4.0, smart manufacturing, and digital transformation applications.
The BL211 is built using industrial-grade components and complies with EMC and EMI standards, ensuring reliable operation in harsh industrial environments. It features dual Ethernet ports with switch cascading capability, allowing flexible network topology deployment.
The coupler also includes one RS485 interface, supporting Modbus RTU to OPC UA protocol conversion, enabling legacy Modbus devices to be easily integrated into modern OPC UA-based industrial systems.
Configuration is performed through a Web-based interface, simplifying system setup and deployment. As an OPC UA Server, the BL211 can expand up to 32 I/O modules, supporting multiple types of signals including:
Digital Input (DI)
Digital Output (DO)
Analog Input (AI)
Analog Output (AO)
PWM Output
High-speed Pulse Counter
Thermocouple Modules
The system uses a high-speed backplane bus architecture that supports up to 32 I/O modules with a maximum scanning cycle of 10 ms, ensuring fast and reliable data acquisition.
For system reliability and maintenance, the BL211 includes built-in diagnostics, allowing real-time monitoring of I/O module communication status. The coupler can also provide up to 2000 mA drive current to power connected I/O modules.
The BL211 adopts a spring-clip industrial connection structure combined with separated wiring terminals and pluggable I/O modules, enabling tool-free wiring, easy maintenance, and quick module replacement. With its ultra-slim design, the BL211 is optimized for compact control cabinets and modern industrial systems.
The BL211 OPC UA Coupler provides a reliable and scalable I/O solution that seamlessly connects field devices with industrial IT platforms, making it an ideal choice for Industrial IoT, Industry 4.0, smart manufacturing, and digital transformation projects.
