WhatsApp: +86 16626708626
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Phone: +86 16626708626Description
Key Technical Specifications
- Product type: Ethernet network TCP/IP module, Modicon Quantum, Transparent Ready
- Communication protocol: Ethernet Modbus TCP/IP
- Physical interfaces: RJ45 10BASE-T/100BASE-TX (twisted pair) and MT/RJ 100BASE-FX (multimode fiber)
- Transmission rate: 10/100 Mbit/s
- Redundancy: Supports hot standby redundant architecture
- Power supply: Via rack backplane (Quantum rack supply)
- Current consumption: 750 mA at 5 V DC
- Module format: Standard Quantum module
- Local signaling LEDs: 10/100 MB, Coll, Kernel, Fault, RUN, Fduplex, Ready, Link, Active, TxAct/RxAct
- Operating temperature: 0 to 60 °C
- Protection class: IP20
- Dimensions (approx.): 40.3 mm (W) × 290 mm (H) × 104 mm (D)
- Net weight: 0.345 kg (0.76 lb)
- Marking / standards: CE; UL 508, cUL; FM Class 1 Div 2; CSA C22.2 No. 142
Product Introduction
The Schneider Electric 140NOE77111 is a Modicon Quantum Ethernet TCP/IP module that gives a Quantum PLC rack native 10/100 Mbps Ethernet connectivity for Modbus TCP communications and web-based diagnostics (Transparent Ready, Class C30). It installs directly into a Quantum backplane and draws power from the rack, exposing both copper (RJ45) and fiber (MT/RJ 100BASE-FX) physical layers for flexible plant network designs.
Field teams choose this module because it supports hot standby redundancy, provides clear LED status for link/activity/fault, and integrates cleanly with existing Modbus TCP SCADA and HMI stacks. It is discontinued but still serviceable through end-of-service in 2029, making verified surplus or refurbished stock a practical path to keep legacy Quantum systems online without a full platform migration.
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No LEDs light on power-up | Rack power or backplane issue; module not seated | ❌ Low (module usually OK) | Measure 5 V DC at rack supply; reseat module; try adjacent slot | Verify rack PSU and backplane; swap slot before replacing module |
| RUN LED off, Fault LED steady/red | Module boot failure or firmware fault | ✅ High | Read diagnostic buffer in Unity Pro / Concept; note fault codes | Likely hardware or firmware issue; replace or reflash per OEM procedure |
| Link LED off on RJ45 port | Cable/switch port mismatch; bad patch cable | ❌ Low | Check link LED on switch; swap cable; try 10 Mbps forced mode | Fix cabling/switch config; test with known-good patch lead |
| No Modbus TCP responses from PLC | IP config, firewall, or module not in RUN | ✅ Medium | Ping module IP; check IP settings in PLC config; verify RUN state | Correct IP/gateway; ensure PLC in RUN; confirm firewall allows port 502 |
| Intermittent comms, collisions high | Duplex mismatch or bad fiber patch | ❌ Medium | Check Fduplex LED; inspect fiber connectors; clean with fiber cleaner | Match duplex settings; clean/replace fiber patch; verify 100BASE-FX compatibility |
| Redundancy pair not syncing | Firmware mismatch or config drift between NOEs | ✅ High | Compare firmware versions and IP settings on both modules | Match firmware and config; reload from known-good backup; test failover |
If stuck, send photos of LED states, rack layout, and diagnostic logs. We can review before you pull the module.
140NOE77111
140NOE77111
140NOE77111
Frequently Asked Questions (FAQ)
Q: Is the 140NOE77111 still available new from Schneider?
A: No. Schneider discontinued this module in 2022; end-of-service is set for 2029. You will find New Surplus (factory-sealed, never installed) or Refurbished (tested) units through specialized distributors.
Q: What is the difference between New Surplus and Refurbished here?
A: New Surplus means OEM original, sealed, with full accessories. Refurbished means the module was removed from service, cleaned, electrically tested, and verified functional. We list the exact condition per unit and provide test reports on request.
Q: Can I hot-swap this module in a live Quantum rack?
A: No. The 140NOE77111 is not designed for hot-swap in normal operation. Power down the rack or follow your site’s approved maintenance window procedure to avoid backplane glitches or communication loss.
Q: Will my existing Modbus TCP SCADA work without reprogramming?
A: Yes, if IP settings and Modbus mapping stay the same. The module presents standard Modbus TCP over Ethernet. Keep the IP address, subnet, and gateway identical to the old module to avoid SCADA reconfiguration.
Q: Does this support fiber and copper at the same time?
A: The module provides both RJ45 (10/100BASE-TX) and MT/RJ (100BASE-FX) physical interfaces, but you typically use one active link per network segment. Choose the medium that matches your plant network topology and grounding strategy.
Q: What firmware should I match when replacing a failed unit?
A: Match the firmware revision of the failed module where possible. Firmware differences can affect Modbus behavior or redundancy handshakes. If you must use a different revision, test in a maintenance window and validate I/O scanning and SCADA polls before going live.
Q: What warranty do you offer on obsolete stock like this?
A: Standard coverage is 1 year on New Surplus and Refurbished units, with a clear RMA process. We document incoming condition and functional test results so you know exactly what you are installing.
