Ethercat May 2026

This makes it the dominant choice for where deterministic latency matters more than raw bandwidth. Its weakness is the requirement for specialized slave hardware and a real-time capable master – but in return, it scales from a handful of I/O points to thousands with consistent, predictable timing.

| Address Type | Purpose | | :--- | :--- | | | Physical order in the ring (auto-configured) | | Node addressing | Fixed station alias (set in EEPROM) | | Logical addressing | FMMU (Fieldbus Memory Management Unit) maps physical I/O into a 4 GB virtual address space – allows master to read/write scattered I/O with one datagram | ethercat

No need for managed switches, reducing cost and complexity. 3. Performance Metrics (Measured) | Metric | Typical Value | | :--- | :--- | | Cycle time | 31.25 µs (minimum theoretical), 50–250 µs typical | | Jitter | < 1 µs (deterministic, not statistical) | | Number of slaves | Up to 65,535 | | Process data per frame | Up to 1498 bytes (standard MTU) or 1498* (jumbo frames) | | Sync accuracy | < 1 µs between slaves (Distributed Clocks) | This makes it the dominant choice for where