Product Overview
When a Modicon Quantum rack loses its Ethernet link, production data stops flowing and operators fly blind. The 140NOE77100C from Schneider Electric restores that connection. This Ethernet module belongs to the Modicon Quantum automation platform and speaks Ethernet Modbus TCP/IP at 10/100 Mbit/s. A Class B20 web server supports diagnostics through predefined web pages, a data editor, and a rack viewer. The module carries CE marking plus UL 508 and cUL certifications, and it holds FM Class 1 Division 2 and CSA C22.2 No 142 approvals.
Technical Specifications
| Specification | Value |
|---|---|
| Product Line | Modicon Quantum |
| Communication Protocol | Ethernet Modbus TCP/IP |
| Transmission Rate | 10/100 Mbit/s |
| Web Server | Class B20 |
| Current Consumption | 750 mA at 5 V DC |
| Supply | Via the power supply of the rack |
| Protection Class | IP20 |
| Ambient Temperature | 0 to 60 °C |
| Relative Humidity | 95 % without condensation |
| Protective Treatment | Conformal coating Humiseal 1A33 |
| Net Weight | 0.345 kg |
| Certifications | UL 508, cUL, CE |
Solving Network Pain Points
Pain point 1: fragile network links. The 140NOE77100C offers a physical interface with MT/RJ 100BASE-FX fiber optic and RJ45 10BASE-T/100BASE-TX twisted pair. Fiber reaches across noisy plant floors; twisted pair handles short cabinet runs. Both speeds negotiate automatically at 10/100 Mbit/s.
Pain point 2: downtime during controller swaps. Hot standby redundant architecture keeps the line running. If the primary controller drops, the standby takes over without a network restart. That redundancy matters in oil, gas, and continuous process plants where every minute of downtime carries a cost.
Pain point 3: blind troubleshooting. Ten front-panel LEDs report data rate, collision, download mode, fault, run, full-duplex, ready, link, rack active, and transmit/receive activity. A technician reads the fault without a laptop.
Where It Fits
In oil and gas terminals, the module links Quantum controllers to SCADA over Modbus TCP messaging. In water treatment, I/O scanning collects field data across a plant network. In manufacturing, the web server lets maintenance view rack status from a browser. The conformal coating resists humidity and airborne contaminants, and the 0 to 60 °C range covers standard control rooms. For high-altitude sites, operation is rated up to 4500 m.
Integration Note
Wiring into an Ethernet Modbus TCP/IP network may require an external gateway or connection module. Confirm cables and gateways with your supplier before commissioning.
Selection Checklist
Before ordering, verify your rack accepts a standard-format Quantum module, confirm the 5 V DC rack supply can deliver 750 mA, and check that your network design matches the fiber or twisted-pair interface. Oil AutoTech offers hands-on technical selection help and fast-dispatch spares for oil, gas, and industrial automation. Contact Oil AutoTech today for pricing and availability.
Please verify current lifecycle status and availability with Oil AutoTech before ordering.
