EtherCAT Real-Time

EtherCAT (Ethernet for Control Automation Technology) is an industrial real-time fieldbus protocol used for motion control, synchronized automation, and precise timing. Unlike standard Ethernet (non-deterministic), EtherCAT guarantees sub-millisecond cycle times and microsecond-level synchronization. In EtherCAT, a master controller sends datagrams that daisy-chain through slave devices (motors, I/O, sensors). Each slave reads relevant data, writes state, and forwards the datagram. Result: entire network updates in microseconds, enabling synchronized multi-axis motion and complex automation.