BECKHOFF Topology Extension Module EK1122

Interface & Connectivity
• Dual RJ45 ports, 100BASE-TX Fast Ethernet.
• Maximum cable length: 100 m with Cat.5e screened twisted-pair.
• Data rate: 100 Mbit/s full-duplex EtherCAT.

Timing & Latency
• Port-to-port latency: ≈ 1 µs (typical), negligible impact on cycle time.

Power & Consumption
• Supply: drawn from the E-bus (no external 24 V required).
• Current draw: 220 mA (typical) from the adjacent EtherCAT coupler.

Environmental Specifications
• Operating temperature: –25 °C … +60 °C.
• Vibration/shock: 5 g / 30 g in accordance with IEC 60068-2-6 / ‑27.
• Protection class: IP20 (DIN-rail mount).
• Certifications: CE, UL, ATEX, IECEx, cFMus.

Mechanical Data
• Dimensions (W×H×D): 24 mm × 100 mm × 52 mm.
• Weight: ≈ 65 g.

Functional Features
• Enables star or hybrid EtherCAT topologies by inserting between any terminal segment.
• Supports Hot Connect (HC); segments can be added/removed without stopping the bus cycle.
• Variant EK1122-0080 offers Fast Hot Connect (FHC) for < 1 s topology switch-over.

LED Indicators
• RUN: module state (Init, Pre-Op, Safe-Op, Op).
• LINK/ACT (X1, X2): link status and activity per port.
• E-bus: internal bus health.

Typical Applications
• Star or tree extension of EtherCAT networks in robotic cells, packaging lines, or modular machines.