New Product Release | EtherCAT Protocol L-coded IO-Link Master

As industrial automation continues to evolve towards decentralization and intelligence, higher demands are being placed on field device connectivity, power supply capabilities, and communication protocols. The latest EtherCAT Protocol L-coded IO-Link Master product from SENTINEL integrates an L-coded high-current power interface, comprehensive EtherCAT support, and a highly flexible IO-Link master architecture, making it a critical component in the digital transformation of modern factories.

L-coded Power Interface: High Current, Compact Size, High Protection

Traditional industrial connection systems often require a trade-off between current capacity and spatial efficiency. The adoption of the L-coded interface eliminates this compromise. Compared with the 7/8" power interface, the L-coded interface offers up to 16A current capacity while maintaining a more compact M12 form factor, saving approximately 30% in installation space. Its compact design is especially suitable for robot joints, conveyor systems, and other equipment-dense applications.

In addition, the L-coded interface boasts an IP67 protection rating, offering excellent resistance to dust and water—ideal for harsh environments involving outdoor exposure, dust, or humidity. Combined with internal resin encapsulation, the module offers enhanced shock and vibration resistance, significantly improving the reliability and stability of field installations.

EtherCAT Protocol Support: Setting a New Standard in Real-Time Communication

SENTINEL’s L-coded IO-Link master supports the EtherCAT protocol, meeting the stringent requirements of industrial control systems for high-speed real-time communication. With microsecond latency, gigabit bandwidth, and high synchronization performance, EtherCAT is widely used in motion control, robotics, and high-speed packaging lines.

Thanks to deep integration with the EtherCAT protocol, the master module can seamlessly connect with various EtherCAT controllers, enabling high-frequency data collection and rapid command response, thereby improving the execution efficiency of the entire system. This communication architecture not only optimizes network topology and simplifies deployment but also reduces wiring costs—driving industrial networks towards enhanced real-time responsiveness.

IO-Link Master: Flexible Expansion and High-Density Connectivity

The L-coded IO-Link master offers an 8-port configuration. The ELCT-8IOL-L001 features all Class A ports, while the ELCT-8IOL-L04B provides a 4A+4B hybrid configuration to meet various device connection needs. Each port supports up to 2A current output, 32-byte I/O data, and multiple communication speeds with full-frame compatibility, fully compliant with the IO-Link V1.1 standard.

Class B ports allow for higher current output, ideal for connecting intelligent actuators or complex devices for more efficient energy transmission. The module is designed with dual M12 D-coded Ethernet interfaces and includes built-in switching functionality. It also supports auto-negotiation and crossover switching mechanisms, enhancing system flexibility and ensuring stable data transmission.

The product emphasizes high integration and ease of installation. It uses high-strength, flame-retardant plastic housing, combined with metal connectors and internal resin sealing, to ensure stable operation in environments ranging from -20°C to +55°C. The IP67 protection rating ensures continued performance in dusty, humid, and vibration-intensive industrial sites.

Application Scenarios and Value

This product series is particularly well-suited for the following industrial automation scenarios:

• Intelligent manufacturing units and edge control at production lines


• High-speed sorting and logistics systems


• Multi-axis collaborative robotic systems


• High-integration packaging and assembly lines


• Standardized flexible production lines under Industry 4.0

With its outstanding power capacity, EtherCAT-compatible high-speed communication, and robust IO interface expandability, SENTINEL’s L-coded IO-Link Master is becoming the core node for building intelligent, distributed, and real-time industrial network systems.

Conclusion: Connecting the Future from the Present

SENTINEL’s L-coded IO-Link Master product integrates high-performance L-coded interfaces, high-speed EtherCAT protocol, and flexible IO-Link architecture to provide industrial users with a high-density, easy-to-deploy, and scalable field connection solution. On the journey to automate and smarten factory operations, this product undoubtedly serves as a key enabler for enhancing system reliability and communication efficiency.

Customer Support and Service

To learn more about SENTINEL’s products, please contact your sales representative or call 022-83726972. You may also visit our official website at www.sentinel-china.com, where you’ll find comprehensive product information, selection manuals, CAD and Eplan files, configuration files, and tutorials to help you easily access everything you need.

Our professional technical team is always ready to provide customized customer support and efficient after-sales service, ensuring that every user receives maximum value and support.