The Beckhoff EL6022 EtherCAT Terminal is a robust and versatile communication interface module that enables the integration of serial devices into EtherCAT automation systems. With two independent RS422/RS485 channels, it provides a flexible and reliable solution for connecting legacy or specialised equipment that relies on serial communication.

Each channel is accessed via a 9-pin D-sub connector, the industry standard for serial interfaces. This ensures compatibility with a wide variety of existing devices, including controllers, drives, sensors, barcode scanners, measuring instruments, and diagnostic equipment. The inclusion of two channels in a single terminal enhances channel density, reduces hardware costs, and saves space in control cabinets.

The EL6022 supports data transfer rates from 300 to 115,200 baud, making it suitable for both older, low-speed devices and modern, faster serial peripherals. By default, the module is configured for 9600 baud, 8 data bits, no parity, and 1 stop bit (8N1), the most widely used communication setting, ensuring straightforward plug-and-play operation. These parameters can be reconfigured as needed, providing the flexibility to meet diverse application requirements.

Designed for long-distance communication, the EL6022 supports twisted pair cabling up to 1000 metres, with a line impedance of 120 Ω. This capability makes it well-suited for large-scale or distributed automation environments, where devices may be located far from the control system.

Another practical feature of the EL6022 is its ability to provide external supply voltages of up to 5 V/20 mA on each channel. Sourced directly from the E-bus, these outputs are short-circuit proof, allowing the module to power small external devices without the need for additional wiring or power supplies. This streamlines installation and further reduces overall system complexity.

Seamless integration into the EtherCAT network ensures that serial device data is efficiently converted into process data for use by the automation system. This allows non-EtherCAT devices to become part of distributed control architectures, enabling hybrid systems that combine modern EtherCAT technology with existing equipment investments.

In practical use, the EL6022 is ideal for industries such as manufacturing, logistics, process automation, and test engineering. It enables reliable communication with serial-based devices while leveraging the real-time performance and modularity of EtherCAT. For example, it can connect a distributed sensor network over RS485, link diagnostic tools to production equipment, or interface with intelligent drives that still utilise RS422.

In summary, the Beckhoff EL6022 EtherCAT Terminal delivers a compact, powerful, and flexible solution for integrating serial communication into EtherCAT systems. With dual channels, broad baud rate support, long-distance capability, and built-in power supply features, it offers a reliable bridge between traditional serial devices and modern automation networks.