EtherCAT is an international IEC standard, with open design, providing stability and extended compatibility specifications. There are several versions developed as time went by, providing safety over EtherCAT, EtherCAT P for supplying power and communication, and EtherCAT G/G10 for higher transfer rates, all of them with the existing EtherCAT equipment. EtherCAT enables synchronization in nanoseconds, significantly improving the efficiency and reducing the CPU load by 25-30% in comparison to the other bus systems. It offers flexible topology, supporting up to 65 535 devices with a line, bus, star, tree, or any other topology combination. EtherCAT provides simplicity and robustness, with the ability for automatic address assignment and unique frames processing, making it the fastest industrial Ethernet technology.