Description
Product Introduction
The Schneider Electric Modicon 140NOE77101 is a high-performance Ethernet TCP/IP network module for the Modicon Quantum PLC platform. Featuring Schneider’s FactoryCast web server technology, it provides high-speed industrial networking alongside real-time web-based diagnostics, file management, and SCADA connectivity over standard Ethernet infrastructure.
Supporting 10/100 Mbps full-duplex communication, the 140NOE77101 handles peer-to-peer messaging between PLCs via Modbus TCP/IP, global data exchange, and direct HMI/OPC communication. Its built-in HTTP server allows engineers to inspect system status, access diagnostic counters, and view custom user web pages directly from any standard browser without specialized software.
Key Technical Specifications
| Parameter | Specification Details |
| Module Type | Ethernet TCP/IP Network Option Module (FactoryCast) |
| Part Number | 140NOE77101 |
| Manufacturer | Schneider Electric / Modicon |
| Platform Compatibility | Modicon Quantum Local & Remote Racks |
| Physical Interface | 1x RJ45 Port (Shielded Twisted Pair, 10BASE-T / 100BASE-TX) |
| Transmission Rate | 10/100 Mbps Auto-Negotiation |
| Protocols Supported | Modbus TCP/IP, HTTP (Web Server), FTP, SNMP, DHCP, BOOTP, I/O Scanning |
| Web Technology | FactoryCast Embedded Server with Custom Web Page Support |
| Bus Current Requirement | ~750 mA max at 5.1V DC (from backplane) |
| Diagnostics | Active, Ready, Link, 100M, Collision, Fault LEDs |
Application Scenarios & Field Experience
The 140NOE77101 is essential in plant-wide industrial architectures where PLC data must seamlessly interface with enterprise SCADA systems, remote HMIs, and diagnostic networks.
- Plant SCADA & MES Uplinks: Streaming process variables and alarm states over Ethernet to Wonderware, Ignition, or Citect SCADA servers.
- PLC-to-PLC Interlocking: Executing high-speed peer-to-peer data transfers between multiple Quantum racks using Modbus TCP/IP I/O Scanning.
- Remote Web Diagnostics: Allowing engineers to log into the PLC’s embedded web page to monitor internal register values, view fault logs, and evaluate network traffic remotely.
- Water & Energy Management: Linking distributed pumping stations or substation PLCs to a centralized monitoring network over Ethernet fiber rings.
Field Case Study: A manufacturing plant was experiencing frequent HMI communication timeouts across its factory floor. Diagnostic logs revealed high collision rates on an old 10 Mbps Ethernet card. Upgrading to a 140NOE77101 module provided 100 Mbps auto-negotiation and improved Modbus TCP socket handling, lowering network latency from 120 ms to under 8 ms and eliminating HMI timeouts.
Quality Assurance & Testing Procedure
Every surplus 140NOE77101 module undergoes a complete network diagnostic suite before dispatch:
- Visual & Structural Audit: Inspecting backplane gold contacts, side latches, and the RJ45 Ethernet port housing for physical integrity.
- Backplane Handshake & Power-On Test: Seated in a Quantum test chassis to confirm proper 5.1V bus current draw (~750 mA) and card boot sequence.
- Ethernet Communication & Ping Test: Establishing a 100 Mbps link, assigning IP addresses via BOOTP/DHCP, and running continuous ping and Modbus TCP read/write tests.
- FactoryCast Web Server Verification: Accessing the internal web server to verify HTTP/FTP services, flash memory integrity, and dynamic webpage rendering.
- ESD-Safe Packaging: Cleaned, static-shielded, and packaged in custom protective foam cradles.
140NOE77101
140NOE77101
140NOE77101
140NOE77101
Technical Field Tips & Traps
- ⚠️ IP Address Assignment Methods: Out of the box, the 140NOE77101 may revert to a MAC-based default IP address or wait for a DHCP/BOOTP server. You can assign the IP address directly in your software hardware configuration (Concept, ProWORX 32, or Unity Pro / EcoStruxure) or via Schneider’s BootP server utility.
- ❗ Firmware Version Alignment: Ensure the module’s firmware version matches the hardware configuration profile in Unity Pro / EcoStruxure Control Expert. Firmware mismatches can cause configuration download failures or prevent I/O scanning from starting.
- ⚠️ Backplane Power Allocation: The 140NOE77101 draws up to 750 mA from the 5.1V backplane bus. When adding multiple Ethernet cards to a single chassis, calculate total power draw to ensure the rack power supply (e.g., 140CPS11420) is not overloaded.
- ❗ Duplex Settings: For stable network performance, ensure managed industrial switches are set to Auto-Negotiate or hardcoded to match the 140NOE77101 port configuration (100 Mbps / Full Duplex).
Frequently Asked Questions
Q: What is the main difference between 140NOE77101 and 140NOE77100?
A: The 140NOE77101 is an upgraded version of the 140NOE77100, featuring enhanced web server functionality (FactoryCast), updated firmware memory headroom, and improved Modbus TCP socket performance.
Q: Does the 140NOE77101 support Modbus TCP I/O Scanning?
A: Yes, it supports Modbus TCP I/O scanning, allowing the Quantum CPU to automatically read and write data to remote Ethernet I/O drops, variable frequency drives, and third-party gateways without manual messaging logic.
Q: Can I replace this card while the Quantum rack is powered (Hot Swap)?
A: Yes, Quantum racks support Removal and Insertion Under Power (RIUP). However, unplug the RJ45 Ethernet cable before removing the module to avoid triggering network topology faults on active switches.
Q: What programming software supports the 140NOE77101?
A: It is fully supported across Concept, ProWORX 32, and Unity Pro / EcoStruxure Control Expert.
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