Schneider 140NOE77111C: Advanced Ethernet Network TCP/IP Module for Quantum

Core Function of This Ethernet Network Module

The Schneider 140NOE77111C connects a Quantum PLC to high-speed Ethernet networks. This Ethernet network TCP/IP module supports Modbus TCP/IP and HTTP protocols. It enables data exchange with SCADA systems and enterprise-level applications. Consequently, the module bridges plant-floor control with business information systems.

Physical Dimensions and Module Construction

This Ethernet network module measures 162 mm in total height. Its width reaches 33 mm for a single-slot Quantum form factor. The module depth stands at 135 mm including the front panel. You will find 412 discrete components on this six-layer PCB. These include a 32-bit processor, Ethernet controller, and isolation transformers. The Schneider 140NOE77111C weighs approximately 410 grams for secure rack mounting.

Processor and Memory Specifications

The Schneider 140NOE77111C houses a 32-bit RISC processor running at 200 MHz. This dedicated CPU handles all network traffic without burdening the main PLC processor. The module contains 8 MB of flash memory for firmware and web pages. It also includes 4 MB of SRAM for communication buffers and data storage. A non-volatile EEPROM retains configuration parameters without any battery backup.

Ethernet Interface and Port Configuration

This Ethernet network module offers two independent 10/100 Base-T Ethernet ports. Both ports use standard RJ45 connectors with integrated link and activity LEDs. The module supports auto-negotiation and auto-crossover on both ports. Port 1 serves as the primary network connection for Modbus traffic. Port 2 supports daisy-chaining or redundant network configurations.

Communication Protocols and Services

The Schneider 140NOE77111C supports Modbus TCP/IP client and server functions. It handles up to 128 simultaneous Modbus connections for multiple devices. The module also supports SNMP v1 and v2c for network management. A built-in web server provides real-time data access via standard browsers. The module supports FTP for file transfers and firmware updates.

I/O Scanning and Data Exchange

This Ethernet network module performs cyclic I/O scanning without PLC program intervention. It reads data from up to 128 remote Modbus TCP devices. The scan rate reaches 5 milliseconds for high-speed applications. The module stores scanned data in dedicated memory for PLC access. It also writes output data to remote devices on a cyclic basis.

Network Security and Redundancy

The Schneider 140NOE77111C includes IP address filtering for network security. It also supports MAC address binding to prevent unauthorized access. The module features dual Ethernet ports for media redundancy. A built-in DHCP server simplifies IP address management on local networks. The module also supports SNTP for time synchronization across the control system.

Status Indicators and Diagnostic Features

This Ethernet network module provides 10 LED status indicators on the front panel. Two green LEDs show Ethernet link status for each port. Two yellow LEDs indicate network activity for each port. A green ready LED illuminates when the module passes self-diagnostics. Red LEDs signal IP conflicts, memory errors, and communication timeouts.

Energy Storage and Power Requirements

The Schneider 140NOE77111C draws 550 mA from a 5 V DC logic supply. It also requires 15 mA from a 24 V DC field supply for status circuits. The board incorporates eight 100 µF tantalum capacitors for power decoupling. Total stored energy reaches approximately 0.06 joules at nominal voltage. The module dissipates 3.1 W of heat during normal operation.

Installation and Configuration Notes

You must install this Ethernet network module in any slot of a Quantum rack. Always assign a unique IP address before placing the module into service. Then, configure the I/O scanning parameters using Unity Pro software. The module requires standard CAT5e Ethernet cables for network connections. Regular firmware updates add support for new network security features.