Product Overview
The Schneider Electric 140NOC77100 is a dedicated network module from the Modicon Quantum series, engineered for reliable EtherNet/IP communication in industrial automation systems. This module supports up to 128 simultaneous connections and a transmission rate of 10/100 Mbit/s, making it ideal for applications requiring robust data exchange between controllers, drives, and I/O devices. Its compact design and LED signaling simplify diagnostics and integration.

Technical Specifications Breakdown
Key parameters for the 140NOC77100 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Product Line | Modicon Quantum |
| Part Number | 140NOC77100 |
| Product Type | Network Module |
| Communication Protocol | EtherNet/IP |
| Maximum Connections | 128 |
| Transmission Rate | 10/100 Mbit/s |
| Transmission Medium | Twisted Pair |
| Port Type | Ethernet RJ45 |
| Local Signaling | LED |
| Current Consumption | 500 mA |
| Degree of Protection | IP20 |
| Standards | UL 508 |
| Supply Source | Power Supply of Rack |
Industry Applications
Manufacturing Line Integration
This network module connects PLCs to remote I/O and drives over EtherNet/IP, supporting up to 128 devices. Its 10/100 Mbit/s speed ensures real-time control in packaging or assembly lines.
Material Handling Systems
In conveyor networks, the module provides reliable twisted-pair communication, reducing downtime. The IP20 rating suits clean indoor environments like distribution centers.
Process Control Networks
For chemical or food processing, the module integrates with existing Modicon Quantum racks, simplifying network architecture and reducing cabling costs.

Installation & Setup Guidance
Mount the module in a Modicon Quantum rack and connect via the rack's power supply. Use standard twisted-pair Ethernet cables with RJ45 connectors. Configure the EtherNet/IP settings using Schneider's software. Verify LED indicators for link/activity status after power-up. Ensure the environment is clean and dry (IP20 rated).
Maintenance & Reliability
Periodically inspect the RJ45 connections for secure fit and the LEDs for proper indication. Keep the module free of dust and moisture. No internal adjustments are required. The UL 508 certification confirms adherence to industrial safety standards.
Compatibility & Integration
The 140NOC77100 is designed for the Modicon Quantum series and communicates via EtherNet/IP. It integrates seamlessly with Schneider PLCs and third-party devices supporting the same protocol. The twisted-pair medium ensures broad compatibility with standard Ethernet infrastructure.
Selection Guide & Purchasing Advice
When selecting a network module, consider the number of connections needed (this unit supports 128) and required data rate (10/100 Mbit/s). For EtherNet/IP-based systems, the 140NOC77100 offers a reliable, cost-effective solution. SpareTechPLC stocks this module with fast shipping and expert support. Please verify current lifecycle status and availability with SpareTechPLC before ordering.
Troubleshooting & Common Issues
- No Link LED: Check the Ethernet cable and ensure the RJ45 is fully inserted. Verify the remote device is powered and configured for EtherNet/IP.
- Intermittent Connection: Inspect the twisted-pair cable for damage or excessive length. Ensure the network is not overloaded beyond 128 connections.
- Module Not Recognized: Confirm proper seating in the rack and that the rack power supply is delivering adequate current (500 mA per module).