PLCs, Power Supplies & Others

The Schneider 140NOC78100 provides high-performance Ethernet connectivity for Modicon Quantum control systems. This network module supports 64 simultaneous connections with 10/100 Mbps data rates for industrial automation networks.

Key Technical Specifications

Dual RJ45 Port Architecture

The Schneider 140NOC78100 features two independent RJ45 Ethernet ports for network redundancy or device segmentation. Each port operates at 10 or 100 Mbps with automatic speed detection and crossover detection.

Engineers can configure these ports for distinct network roles. One port typically connects to the control network while the second port provides service access or forms a daisy-chain topology.

High-Density Connection Capacity

This network module supports up to 64 simultaneous TCP/IP connections, enabling extensive data exchange with HMI stations, SCADA servers, and other Ethernet devices. The module maintains all connections concurrently without performance degradation.

Each connection handles both explicit messaging for configuration and implicit messaging for real-time I/O data. This dual-mode operation optimizes bandwidth utilization across all active sessions.

System Integration with Modicon Quantum

The 140NOC78100 connects directly to the Quantum backplane through the standard 96-pin connector. The module occupies a single I/O slot and communicates with Quantum CPUs including 140CPU31110, 140CPU43412, and 140CPU65150 models.

Unity Pro software provides complete configuration access for IP addressing, subnet masks, and gateway parameters. Engineers can assign module parameters offline and download them during system commissioning.

Mechanical Design and Form Factor

Weighing approximately 0.38 kg, this Ethernet module measures 130 mm x 40 mm x 100 mm. The compact single-slot design enables high-density networking configurations within standard Quantum racks.

The front panel includes comprehensive LED status indicators. Separate LEDs display power, module health, network activity, and port-specific link status for rapid diagnostic assessment.

Protocol Support and Interoperability

The 140NOC78100 supports Modbus TCP/IP as its native application protocol. This open standard enables seamless communication with third-party HMIs, drives, and instrumentation without proprietary gateways.

Ethernet TCP/IP compliance ensures compatibility with standard networking infrastructure. The module operates with unmanaged switches, managed switches, and industrial Ethernet equipment from any manufacturer.

Replacement Strategy and Migration Path

Schneider has designated the BMENOC0321 for the M580 platform as the successor to 140NOC78100. This evolution reflects the industry transition from Quantum to the modern M580 ePAC architecture.

Existing Quantum systems continue reliable operation with the 140NOC78100. For new installations, Schneider recommends the BMENOC0321 which offers enhanced performance and cybersecurity features.

Bus Current and Power Requirements

The module draws 800 mA from the 5 VDC backplane bus, a typical value for Quantum Ethernet interfaces. This power consumption remains consistent regardless of network traffic volume or connection count.

All Ethernet port power derives from the backplane connection. The 140NOC78100 requires no external power supply for network interface operation.

Network Topology Flexibility

Engineers can implement various network architectures using the 140NOC78100 dual ports. Common configurations include star topology through switches, linear daisy-chaining between panels, and device-level ring (DLR) with managed switches.

Each port includes automatic MDI/MDI-X crossover detection. This feature eliminates the need for crossover cables when connecting directly to PCs or other Ethernet devices.

Status Monitoring and Diagnostics

Front-panel LED indicators provide immediate operational feedback. A green RUN LED confirms normal module operation, while STS and NS LEDs communicate module and network status respectively.

Individual port LEDs display LINK and ACT status. Green indicates established connection at 100 Mbps, amber indicates 10 Mbps operation, and flashing activity confirms data transmission.

Application Versatility

Industrial facilities deploy the Schneider 140NOC78100 across numerous networking applications. Typical implementations include control system integration with plant-wide SCADA, remote I/O communication, drive system networking, and historian data collection.

The 64 connection capacity supports medium to large Quantum installations. Most facilities utilize 10 to 30 simultaneous connections, leaving substantial reserve capacity for future expansion.

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