The Beckhoff EK1110 EtherCAT Extension Coupler is a compact and efficient module designed to extend EtherCAT networks beyond a local I/O terminal block, enabling modular, scalable, and flexible automation architectures. Acting as a network extension device, the EK1110 connects downstream EtherCAT devices to upstream controllers or couplers, ensuring seamless communication across distributed systems.

The module uses standard Ethernet/EtherCAT cabling (minimum Cat.5, shielded) as its transmission medium, supporting a station distance of up to 100 m. This capability provides engineers with flexibility in system layout, allowing I/O stations and devices to be distributed widely across production areas, buildings, or large-scale plants without compromising communication performance.

With support for all EtherCAT protocols, the EK1110 ensures universal compatibility across Beckhoff’s automation platform. It operates at 100 Mbit/s full-duplex speed, with an impressively low communication delay of only ~1 µs per coupler. This ensures real-time data exchange and deterministic performance, which is vital for time-sensitive applications such as motion control, synchronised robotics, and high-speed production systems.

The EK1110 is designed for simplicity and ease of integration. The bus interface consists of a single RJ45 port, making installation straightforward while ensuring robust and secure network connections. Power is supplied directly via the E-bus, eliminating the need for an external power source and further simplifying wiring.

By extending EtherCAT networks, the EK1110 enables system designers to overcome physical layout constraints and achieve larger, more flexible topologies. It allows engineers to build modular systems where I/O stations can be added, relocated, or expanded without affecting the performance of the overall network. This scalability makes the EK1110 especially valuable in dynamic production environments where equipment and processes evolve frequently.

Despite its compact size, the EK1110 delivers industrial-grade reliability. Its shielded cabling support provides strong noise immunity, while its robust design ensures long-term operation in demanding environments. Combined with EtherCAT’s distributed clock technology, the EK1110 helps maintain precise synchronisation across all networked devices, even in extended topologies.

The EK1110 is ideally suited for applications in machine building, process automation, building systems, and distributed energy management. It bridges the gap between local control cabinets and remote field installations, enabling efficient, reliable, and cost-effective deployment of EtherCAT-based systems.

In summary, the Beckhoff EK1110 EtherCAT Extension Coupler provides a compact, fast, and reliable solution for extending EtherCAT networks. With its 100 m reach, 100 Mbit/s communication, ultra-low 1 µs delay, and plug-and-play integration, it ensures that automation systems remain scalable, synchronised, and robust across a wide range of industrial environments.