Product Overview
When a Modicon Quantum rack loses its Ethernet link, production data stops flowing and maintenance gets expensive fast. The 140NOE77111C from Schneider Electric restores that link with a proven Ethernet Modbus TCP/IP interface. This module belongs to the Modicon Quantum product line and follows the Transparent Ready concept, so it fits straight into existing control architectures without a redesign.
For maintenance engineers, the value is simple: one part number, one slot, and the rack is communicating again. Oil AutoTech keeps this module ready-to-ship for oil, gas and industrial automation sites that cannot wait on long lead times.
Technical Specifications
| Specification | Value |
|---|---|
| Manufacturer | Schneider Electric |
| Product Type | Ethernet module |
| Product Line | Modicon Quantum |
| Part Number | 140NOE77111C |
| Communication Port Protocol | Ethernet Modbus TCP/IP |
| Transmission Rate | 10/100 Mbit/s |
| Web Server Class | C30 |
| Concept | Transparent ready |
| Supply | Via the power supply of the rack |
| Current Consumption | 750 mA at 5 V DC |
| Format | Standard |
| Protection Class | IP20 |
| Certifications | UL 508, cUL |
| Ambient Temperature | 0 to 60 °C |
| Humidity | 95 % without condensation |
| Marking | CE |
| EAN | 3595862055819 |
What the Key Ratings Mean on the Plant Floor
The 10/100 Mbit/s transmission rate gives the module enough bandwidth for controller data, diagnostics and web-based monitoring on one network. The C30 web server class means the module can serve diagnostic pages directly, which helps engineers check status without opening the cabinet.
Power comes from the rack supply, and current draw is 750 mA at 5 V DC. That keeps wiring simple and removes the need for a separate power drop. The IP20 protection class suits clean control rooms and enclosures, while the 0 to 60 °C ambient range and 95 % humidity rating without condensation cover most industrial environments. UL 508 and cUL certifications support use in North American control systems.
Where This Module Fits
A gas compressor station running a Quantum PLC can use the 140NOE77111C to push flow and pressure data to a supervisory system over Modbus TCP/IP. In a water treatment plant, the same module links remote I/O to the main controller across the plant LAN. Packaging lines with older Quantum racks also benefit when an Ethernet port fails and production needs to resume quickly.
In each case, the module acts as the bridge between the controller and the network. When it fails, operators lose visibility. Keeping a spare on the shelf is practical insurance.
Installation and Service Notes
The module mounts in a standard Quantum rack slot and draws power from the rack backplane. Before fitting, confirm the rack is de-energized and follow the manufacturer’s installation manual for slot assignment and cabling. Because the module uses Ethernet Modbus TCP/IP, wiring into an existing network may require an external gateway or connection module. Confirm cables and gateways with your supplier before ordering.
For maintenance, inspect the module periodically for dust buildup and secure seating. The IP20 rating protects against solid objects but not liquids, so keep the cabinet closed and clean. There are no user-serviceable parts inside; if a fault is suspected, replace the module rather than attempting internal repair.
Why Buy from Oil AutoTech
Oil AutoTech supplies fast-dispatch spares for oil, gas and industrial automation applications. The 140NOE77111C ships worldwide, and our team can help you confirm compatibility with your Quantum rack before you commit. If you need hands-on technical selection help, we are ready.
Please verify current lifecycle status and availability with Oil AutoTech before ordering.
Contact Oil AutoTech today for pricing and availability.
