Introduction
Industrial automation has evolved from isolated control loops to fully networked plants. The Schneider Electric 140NOC78100C Ethernet network module sits at the heart of that shift for Modicon Quantum systems. It connects controllers, I/O and supervisory systems over Ethernet/IP and Modbus TCP, so your plant data moves where it needs to go. For oil, gas and heavy process operations, that connectivity is not optional — it is the backbone of uptime.
What Is the 140NOC78100C?
The 140NOC78100C is an Ethernet control module for the Modicon Quantum automation platform. It is a standard-format, rack-mountable unit that installs directly into a Quantum rack and draws power from the rack supply. The module carries a coated circuit board for added protection in demanding environments and holds an IP20 rating.
It speaks both Ethernet/IP and Modbus TCP, so you can integrate it into mixed-protocol networks without adding separate gateways for each device type. The embedded 4-port switch reduces external hardware and simplifies daisy chain or redundant ring wiring.
Key Technical Specifications
| Specification | Value |
|---|---|
| Product Line | Modicon Quantum |
| Communication Protocol | Ethernet/IP and Modbus TCP |
| Exchange Mode | Full Duplex |
| Maximum Connections | 64 |
| Transmission Rate | 10 or 100 Mbit/s |
| Redundancy Option | Hot Standby Redundant Architecture |
| Topologies | Redundant ring, daisy chain loop |
| Web Server | Embedded |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Mounting Type | Rack Mountable |
| IP Rating | IP20 |
| Port | RJ45 10BASE-T/100BASE-TX |
| Net Weight | 0.345 kg (0.761 lb) |
What These Specs Mean in Practice
The 64-connection limit supports medium-to-large I/O networks without constant expansion. Full duplex exchange means data flows both ways at once, which matters for real-time control and diagnostics. Hot standby redundancy lets a backup controller take over if the primary fails, protecting your process from a single point of failure.
Where the 140NOC78100C Fits
In oil and gas terminals, this module links Quantum controllers to SCADA and historian systems over Ethernet/IP. In water treatment plants, Modbus TCP ties it to flow meters, analyzers and remote I/O. In manufacturing, the embedded web server and SNMP agent give maintenance teams remote visibility into network health.
The redundant ring and daisy chain loop topologies are especially useful where cable runs are long and a break in one segment should not take down the whole network.
Integration and Compatibility
The 140NOC78100C is compatible with 140CPU6xxxx processors. It supports DHCP/BootP server, SMTP email notification, NTP time synchronization, RSTP and CIP messaging. These services help you build a self-monitoring network with minimal extra hardware.
Integration Note
Wiring into Ethernet/IP or Modbus TCP networks may require an external gateway or connection module depending on your existing architecture. Confirm cables, gateways and connection accessories with your supplier before installation.
Selection and Maintenance Tips
Before ordering, verify your rack type, processor model and network topology. Check that your cabinet maintains 0°C to 60°C during operation. Inspect the module periodically for dust buildup and secure seating in the rack. The coated board resists common contaminants, but clean, stable power and proper grounding remain essential for long service life.
For fast dispatch, worldwide, contact Oil AutoTech today for pricing and availability.
Frequently Asked Questions
What protocols does the 140NOC78100C support?
It supports Ethernet/IP and Modbus TCP communication protocols.
How many connections can this module handle?
The 140NOC78100C supports a maximum of 64 connections.
Does it support redundancy?
Yes, it supports hot standby redundant architecture for seamless switchover.
What is the operating temperature range?
The module operates from 0°C to 60°C and stores from -40°C to 85°C.
What processor does it work with?
It is compatible with 140CPU6xxxx processors in the Modicon Quantum line.
