Schneider 140NOE55100C PLC Module

Core Function of This PLC Module

The Schneider 140NOE55100C connects a Quantum PLC to Ethernet networks. This PLC module enables high-speed data exchange with SCADA systems and other controllers. It supports Modbus TCP/IP messaging for industrial automation applications. Consequently, the module facilitates real-time monitoring and control across the plant floor.

Physical Dimensions and Module Construction

This PLC 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 356 discrete components on this six-layer PCB. These include a communication processor, Ethernet controller, and isolation transformers. The Schneider 140NOE55100C weighs approximately 390 grams for secure rack mounting.

Processor and Memory Specifications

The Schneider 140NOE55100C houses a 32-bit communication processor running at 100 MHz. This dedicated CPU handles all network traffic without burdening the main PLC processor. The module contains 4 MB of flash memory for firmware and web pages. It also includes 2 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 PLC module offers one 10/100 Base-T Ethernet port with auto-negotiation. The port uses a standard RJ45 connector with integrated link and activity LEDs. The module supports both half-duplex and full-duplex communication modes. It also provides automatic MDI/MDI-X crossover detection for straight-through cables. The Ethernet port includes isolation up to 1,500 V RMS for industrial environments.

Communication Protocols and Services

The Schneider 140NOE55100C supports Modbus TCP/IP client and server functions. It handles up to 64 simultaneous Modbus connections for multiple devices. The module also supports SNMP for network management and diagnostics. A built-in web server provides real-time data access via standard browsers. The module supports I/O scanning for direct data exchange with remote devices.

I/O Scanning and Data Exchange

This PLC module performs cyclic I/O scanning without PLC program intervention. It reads data from up to 64 remote Modbus TCP devices. The scan rate reaches 10 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 Services and Diagnostics

The Schneider 140NOE55100C includes a BOOTP/DHCP client for automatic IP assignment. It also supports DNS for host name resolution on corporate networks. The module provides email notification for alarm and event conditions. A built-in diagnostic web page shows network statistics and error counts. The module also supports ping responses for network troubleshooting.

Status Indicators and LED Functions

This PLC module provides 8 LED status indicators on the front panel. A green ready LED illuminates when the module passes self-diagnostics. A green run LED shows active communication with the PLC backplane. Yellow LEDs indicate Ethernet link status and network activity. Red LEDs signal IP conflict, memory errors, and communication timeouts.

Energy Storage and Power Requirements

The Schneider 140NOE55100C draws 480 mA from a 5 V DC logic supply. It also requires 10 mA from a 24 V DC field supply for status circuits. The board incorporates six 100 µF tantalum capacitors for power decoupling. Total stored energy reaches approximately 0.05 joules at nominal voltage. The module dissipates 2.6 W of heat during normal operation.

Parameter	Specification
Model	140NOE55100C
Brand	Schneider Electric
Category	PLC Module / Ethernet Communication Module
Height x Width x Depth	162 x 33 x 135 mm
Weight	390 grams
Component Count	356
Communication processor	32-bit at 100 MHz
Flash memory	4 MB
SRAM	2 MB
EEPROM (non-volatile)	128 KB
Ethernet port	1 x 10/100 Base-T
Connector type	RJ45 with integrated LEDs
Auto-negotiation	Yes
Auto MDI/MDI-X	Yes
Isolation voltage	1,500 V RMS
Modbus TCP connections	64 simultaneous
Modbus TCP services	Client and server
I/O scanning devices	64 maximum
I/O scan rate	10 ms typical
Web server	Yes (built-in)
SNMP support	Yes
BOOTP/DHCP client	Yes
DNS support	Yes
Email notification	Yes
Status LEDs	8 (ready, run, link, activity, faults)
Logic supply	480 mA at 5 V DC
Field supply	10 mA at 24 V DC
Decoupling capacitors	6 x 100 µF tantalum
Total stored energy	0.05 Joules
Power dissipation	2.6 W
Operating temperature	0°C to +60°C

Installation and Configuration Notes

You must install this PLC 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 a standard CAT5e Ethernet cable for network connection. Regular firmware updates add support for new network security features.