140NOE21110 Schneider Modicon Ethernet Module – 10/100 Mbps, RS232

Product Overview – Ethernet Communication Module

• 140NOE21110 is an Ethernet communication module from Schneider Electric.
• It belongs to the Modicon automation platform family.
• This module provides fast network connectivity for Modicon systems.
• It has one Ethernet port and one RS232 serial port.
• Use it to connect controllers to plant networks or SCADA systems.

Technical Specifications

• Brand: Schneider Electric
• Model / Part Number: 140NOE21110
• Series: Modicon
• Product type: Ethernet communication module
• Ethernet port: 1 x 10/100 Mbps (auto-negotiation)
• Serial port: 1 x RS232
• Protocol: Modbus (Ethernet and serial)
• Supply voltage: 5 V DC
• Power consumption: 3.5 W
• Dimensions (H x W x D): 100 x 40 x 130 mm
• Weight: 0.3 kg
• Operating temperature: 0 to 60 °C
• Storage temperature: -40 to 85 °C
• Humidity: 5 to 95 % (non-condensing)
• Max altitude: 1000 m above sea level

Key Features & Capabilities

• Single Ethernet port – 10/100 Mbps speed supports standard industrial networks.
• RS232 serial port – connects to legacy devices or local configuration tools.
• Modbus protocol – ensures interoperability with many industrial devices.
• Compact design – saves space in control cabinets (100 x 40 x 130 mm).
• Wide temperature range – 0 to 60 °C operation suits factory floor conditions.
• Robust humidity tolerance – 5 to 95 % non-condensing for humid environments.

Installation & Maintenance

• Mount on standard DIN rail in a control cabinet.
• Ensure good airflow around the module for cooling.
• Use shielded Ethernet cables for reliable communication.
• Check the RS232 pinout before connecting serial devices.
• Firmware updates are available via Ethernet or serial link.
• LED indicators on the front panel show status and activity.
• No regular maintenance needed – robust design for long life.

Compatibility

• Works with Modicon series of controllers (M340, M580, Quantum, etc.).
• Compatible with standard Ethernet switches and routers.
• Supports Modbus TCP/IP and Modbus RTU over serial.
• Integrates with SCADA, HMI, and DCS systems.
• Can replace older 140NOE21100 or similar modules.

Diagnostic & Monitoring

• Front panel LEDs for power, link, activity, and fault status.
• Diagnostic counters for network errors and frame check.
• Remote diagnostics via web interface or Modbus commands.
• Supports SNMP for network management.

Application Scenarios

• Connecting Modicon PLCs to plant-wide Ethernet networks.
• Data collection from remote I/O or field devices.
• Integration with SCADA systems for central monitoring.
• Interfacing with serial devices like barcode readers or printers.
• Replacement of obsolete communication modules.

Comparison with Similar Models

• 140NOE21100 – older model, same form factor, slower processor.
• 140NOE77111 – dual port Ethernet, more advanced routing.
• BMENOC0301 – M580 series, 2 ports, Gigabit capable.
• Choose 140NOE21110 for reliable single port Ethernet with RS232.

Frequently Asked Questions (FAQ)

• Can this module work with Modbus TCP/IP?
  Yes, it supports Modbus TCP/IP over the Ethernet port.
• Is the RS232 port isolated?
  No, the RS232 is not isolated – use proper grounding.
• How many connections can the Ethernet port handle?
  Up to 64 simultaneous connections.
• Can I use this module in high altitude locations?
  Yes, rated for up to 1000 meters above sea level.
• What are the LED indicators for?
  Power, link, activity, collision, and system status.

Experience-based Buying Guide

• Verify your controller compatibility – works with Modicon systems.
• Check if you need RS232 or RS485 – this module offers RS232 only.
• Consider network speed – 10/100 Mbps is sufficient for most applications.
• Plan for cabling – use shielded Ethernet cables in noisy environments.
• Warranty: 12 months against manufacturing defects.
• Shipping: 12-24 hours dispatch via FedEx, UPS, or DHL.
• Keep a spare module to reduce downtime.