Overview
In modern industrial automation, reliable network communication is critical for seamless control and data exchange. The Schneider Electric 140NOE77110C is an Ethernet module from the Modicon Quantum series designed to meet these demands. It supports Ethernet Modbus TCP/IP protocols and provides a reliable transmission rate of 10/100 Mbit/s, making it suitable for a wide range of applications.

Technical Specifications Breakdown
Key parameters for the 140NOE77110C are listed below for quick reference:
| Feature | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Product Type | Ethernet Module |
| Product Line | Modicon Quantum |
| Communication Protocol | Ethernet Modbus TCP/IP |
| Transmission Rate | 10/100 Mbit/s |
| Current Consumption | 750 mA at 5 V DC |
| Protection Class | IP20 |
| Ambient Temperature | 0 to 60 °C |
| Humidity | 95% without Condensation |
| Certifications | UL 508, cUL, CE |
Industry Applications
This Ethernet module excels in environments requiring deterministic communication over Modbus TCP/IP. Typical applications include:
- Manufacturing lines: Connecting PLCs to HMIs and SCADA systems for real-time monitoring.
- Process control: Integrating remote I/O racks in chemical or food processing plants.
- Building automation: Managing HVAC and lighting systems via centralized controllers.

Installation & Setup Guidance
When installing the module, ensure the rack power supply is adequate to support the 750 mA at 5 V DC current consumption. The module is powered via the rack, simplifying wiring. Mount it in a standard slot and connect using shielded Ethernet cables for optimal signal integrity. Verify that the ambient temperature stays within 0 to 60 °C and humidity below 95% without condensation to avoid performance degradation.
Maintenance & Reliability
Periodically inspect the module for dust accumulation, as IP20 protection only guards against objects larger than 12 mm. Clean with a dry, lint-free cloth if needed. Check Ethernet cable connections for looseness or corrosion. The module’s robust design, backed by UL 508 and cUL certifications, ensures long-term reliability in typical industrial environments.
Compatibility & Integration
The 140NOE77110C integrates seamlessly into Modicon Quantum racks and supports Ethernet Modbus TCP/IP, making it compatible with a wide range of Schneider Electric and third-party devices. Its Transparent Ready concept and Class C20 web server facilitate easy setup and diagnostics.
Selection Guide & Purchasing Advice
When selecting an Ethernet module, consider your network speed requirements and protocol support. The 140NOE77110C offers 10/100 Mbit/s flexibility. For purchasing, SpareTechPLC provides genuine Schneider Electric modules with fast shipping. Please verify current lifecycle status and availability with SpareTechPLC before ordering.
Troubleshooting & Common Issues
- No network link: Check Ethernet cable integrity and ensure the switch port is active. Verify the module is properly seated in the rack.
- Slow communication: Confirm that all devices on the network are set to the same speed (10 or 100 Mbit/s).
- Module not powering on: Measure the rack power supply output; it must provide at least 750 mA at 5 V DC.