The B&R X20IF10D3-1 is a POWERLINK bus controller interface module designed for the versatile X20 automation system. This module functions as a controlled node (slave) on a POWERLINK network, enabling seamless and high-speed communication between a master controller and the connected X20 I/O slices. It features an integrated 2-port hub, which simplifies network wiring by allowing for easy daisy-chaining of devices. The node number can be conveniently set using two hexadecimal rotary switches on the front panel. The X20IF10D3-1 handles all data exchange and also provides the necessary power supply to the internal I/O data bus, making it an essential component for building modular and decentralized control solutions.