Omron NX-ECC203 NX Series EtherCAT Coupler Unit

Omron NX-ECC203 is an EtherCAT coupler unit for the NX series I/O system. Connects NX I/O units to an EtherCAT network as a slave station. Features two EtherCAT ports, 125 µs processing cycle time, supports up to 63 I/O units per coupler, and provides up to 10 A total I/O current supply via screwless push‑in terminals. Delivered with end cover.

Applications:

• Distributed I/O control via EtherCAT network

• Machine automation and high‑speed motion control

• Factory automation and production line integration

• Modular I/O expansion for industrial controllers

Core Specifications:

• Number of EtherCAT ports: 2 (RJ45)

• Communication protocol: EtherCAT (CoE, FoE, AoE)

• Processing cycle time: 125 µs (minimum)

• Supported NX units per coupler: up to 63

• Maximum I/O current supply: 10 A total

• NX unit power supply: From NX bus via coupler

• I/O power supply: External 24 V DC (supplied to connected NX units)

• Connection type: Screwless push‑in terminal block (I/O power, unit power)

• Number of I/O power terminals: 2

• Protection rating: IP20

• Dimensions (H × W × D): 104.5 mm × 24 mm × 80.1 mm

• Weight: approx. 170 g

• Operating temperature: 0 °C … 55 °C

• Storage temperature: –25 °C … 70 °C

Advanced Specifications:

• Distributed clock support for synchronised control

• Hot‑swap support for NX units

• Built‑in EtherCAT diagnostics

• Maximum number of slave nodes in network: depends on master specification

• Transmission speed: 100 Mbit/s (100BASE‑TX)

System Integration:

• This coupler belongs to the Omron NX series I/O system.

• Connects to an EtherCAT master (e.g., NJ/NX series CPU, third‑party EtherCAT master) via RJ45 ports.

• Up to 63 NX I/O units can be connected to a single coupler.

• Delivered with an end cover for the last I/O unit.

Related Products:

• NX‑ID5442 – 16‑point PNP digital input unit

• NX‑OD5256 – 16‑point PNP digital output unit

• NX‑AD3604 – 4‑channel analog input unit

• NX‑PF0630 – 3‑phase power supply unit for NX