NX-ECC203 NX Series EtherCAT Coupler Unit 2 Ports 125μs | Omron

The Original New Omron NX-ECC203 is a high-performance EtherCAT coupler unit for the NX series I/O system, designed to connect up to 63 NX I/O units to an EtherCAT network as a single slave node. Featuring a 125 μs minimum communications cycle, 10 A maximum I/O power supply current, and support for task period prioritized refreshing, the NX-ECC203 is suitable for high-speed, high-precision machine automation and motion control applications. The unit includes a built-in 2-port switch for flexible network topologies, screwless push-in terminals for tool‑free wiring, and is delivered with an end cover.

Core Engineering Highlights:
EtherCAT Slave (2 ports) | 125 μs to 10,000 μs communications cycle in DC Mode | Up to 63 connectable NX Units | 10 A max I/O power supply current | 1.25 W power consumption (NX Unit power) | 1 μs max I/O jitter | Screwless push-in connector | 46 mm width | 0°C to +55°C operating temperature | IP20 protection

Key Features:

• Original New Omron NX-ECC203 module

• EtherCAT slave communication with 2 ports (built‑in switch)

• Connects up to 63 NX I/O units (standard and high-performance units can be mixed)

• Supports communications cycle: 125 μs to 10,000 μs in DC Mode (depends on EtherCAT master and unit configuration)

• Maximum I/O power supply current: 10 A

• Supports multiple refreshing methods: Free-Run, Synchronous I/O, Time stamp, and Task period prioritized (NX-ECC203 only)

• I/O jitter performance: Inputs 1 μs max., Outputs 1 μs max.

• Send/receive PDO data sizes: 1,024 bytes max. (input/output)

• Mailbox data size: 256 bytes (input/output)

• Node address setting range: 1 to 512 (rotary switches or Sysmac Studio)

• Unit power supply: 24 V DC (20.4 to 28.8 V DC), 10 W max. NX Unit power supply capacity

• Screwless push‑in terminal block for tool‑free wiring

• DIN rail mounting; delivered with end cover

Applications:

• High-speed, high-precision remote I/O for EtherCAT networks

• Machine automation and motion control systems

• Factory automation and production line monitoring

• Multi-axis synchronized control systems

• Distributed I/O architectures requiring real‑time performance

Technical Specifications:

System Compatibility:

• Compatible with Omron NJ/NX/NY series controllers (EtherCAT master)

• Supports up to 63 NX series I/O units (digital, analog, safety, etc.)

• Works with Sysmac Studio automation software (version 1.44 or later recommended)

• Requires unit version 1.5 or later for task period prioritized refreshing

• Supports mixed use of standard and high-performance NX units

Related Products:

• NX-PD1000 – NX bus power supply unit, 24 V DC input, 12 mm wide

• NX-PF0730 – NX I/O power feed unit, 5-24 V DC input, 10 A, 12 mm wide

• NX-AUX02 – Terminal block coding pins for NX I/O units

• NX-TBC082 – Replacement screwless push-in connector, 8 terminals

• XS6W-6PUR8SSxxxCM-YF – EtherCAT patch cables, PUR, yellow, various lengths

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

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

• NX-ECC202 – 250 μs minimum cycle time version (alternative)

PLC ERA is an independent industrial automation distributor supplying genuine Original New products through established global supply channels. All products are factory sealed when applicable and undergo quality inspection prior to shipment. Omron is a trademark of Omron Corporation.