Omron GX-JC03 EtherCAT 3-Port Junction Slave Module

USD 264.56

EtherCAT 3-port junction slave. 25mm ultra-slim design, star/tree topology support, and 24V DC operation for high-speed industrial network branching.

SKU Omron-GX-JC03 Category
Industrial Automation > Programmable Logic Controllers (PLCs) > Communication Units

Omron GX-JC03 EtherCAT 3-Port Junction Slave Module

Model Identifier GX-JC03
Official Part Number GX-JC03
GTIN Standard 4548583075375

Technical Overview

The Omron GX-JC03 is a 3-port EtherCAT junction slave unit designed to realize flexible wiring solutions in industrial automation networks. It supports daisy chain, star, and tree topologies within a single open network, streamlining assembly and wiring while maintaining super high-speed machine control. By facilitating branching connections, this module helps localize network faults, allowing for partial process operation and debugging even if other nodes or cables fail, effectively preventing overall system shutdowns.

Key Features

  • EnablesflexibleEtherCATnetworktopologiesincludingdaisychain, star, andtreewiringconfigurations[1.4].
  • Compact 25mm width profile minimizes spatial footprint inside electrical cabinets.
  • Wide input voltage range (20.4 to 28.8 VDC) counteracts voltage drops over long cable runs.
  • Isolates network faults per process block; a slave failure on one branch will not affect the entire network's operation.
  • Supports independent commissioning, designing, and debugging of separate machine modules.
  • Equipped with three standard RJ45 ports for EtherCAT communications.

Operates on 24 VDC with a wide functional range of 20.4 to 28.8 VDC to accommodate power voltage drops over long-distance wiring.

Technical Specification Matrix

ParameterValue
Powersupplyvoltage20.4to28.8VDC(24VDC-15%to+20%)[1.1]
Current consumption80 mA (0.08 A)
Ambient operating temperature-10 to 55°C
Ambient storage temperature-25 to 65°C
Ambient operating humidity25% to 85% (with no condensation)
Ambient storage humidity25% to 85% (with no condensation)
Dimensions25 mm × 78 mm × 90 mm
Weight165 g
ProtocolEtherCAT
Number of ports3 (RJ45)
Mounting modeDIN rail
Standards complianceCE, UC1 (cULus Class I Division 2 Products for Hazardous Locations)

Industrial Applications

1. Modular Machine Assembly Line Topology

In a multi-stage manufacturing line where each station handles a distinct process, wiring them via traditional daisy chain creates a single point of failure [1.4]. The GX-JC03 acts as a star-branching hub, connecting EtherCAT slaves from each station independently.

Problem Solved

If a cable breaks or a slave faults in one station, the branching connection ensures other stations continue operating and can be independently debugged without forcing a complete system stoppage.

EtherCATStar wiring topologyModular commissioningFault isolation

2. Long-Distance Automated Conveyor System

Used to route network communication across expansive warehouse conveyor networks where node distances can cause measurable DC voltage degradation.

Problem Solved

Solves the issue of power drops in distributed control systems by utilizing a wide operational voltage tolerance (down to 20.4 VDC) while maintaining stable, high-speed network performance over long physical distances.

20.4 VDC minimumVoltage drop compensationDistributed controlLong-distance wiring

3. Space-Constrained Electrical Panels for Robotics

Installed inside the tight confines of a robot controller cabinet or a highly dense PLC DIN-rail panel to split the EtherCAT network to various end-effectors, sensors, or external servo drives.

Problem Solved

Eliminates the need for bulky network switches by utilizing its industry-leading 25mm compact width footprint, allowing maximum DIN-rail space optimization for other components.

25mm widthDIN rail mountingEtherCAT branchingPanel space optimization
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