The Schneider 140NOM25200 is a DIO head-end adaptor specifically engineered for the Modicon Quantum automation platform. This advanced communication module provides reliable connectivity solutions for industrial control systems requiring robust data exchange capabilities. As a DIO head-end adaptor, it serves as a critical interface between the Quantum controller and field devices, enabling seamless integration into complex automation networks.
The 140NOM25200 head-end adaptor is designed to expand the communication capabilities of Modicon Quantum systems. It supports dual protocol communication, featuring one Modbus Plus port compatible with both fiber optic and single copper media, and one Modbus RS232 port for twisted pair connections. This dual-port architecture allows the module to simultaneously serve as a gateway between different network segments within the same automation system, significantly enhancing system flexibility and integration capability.
In industrial environments where electromagnetic interference is a concern, the fiber optic option provides superior noise immunity and allows for longer transmission distances compared to copper-based solutions. The Modbus RS232 port, on the other hand, offers a simple and cost-effective connectivity option for legacy devices or short-distance communication links.
Dual Communication Protocol Support: Simultaneous Modbus Plus and Modbus RS232 connectivity
Fiber Optic Interface: 820 nm wavelength with low jitter of 5 ns and rise/fall time of 20 ns
Power Loss Budget: 11 dB for 62.5/125 µm fiber, 16.5 dB for 100/140 µm, 6.5 dB for 50/125 µm
Bus Current Requirement: 750 mA
Checksum Validation: Processor, RAM, and RAM address verification for data integrity
RJ45 Connector: One RJ45 connector plus two TX/RX connectors for flexible wiring
High Noise Immunity: ESD resistance of 4 kV contact and 8 kV on air per IEC 801-2

| Parameter | Specification |
|---|---|
| Product Range | Modicon Quantum automation platform |
| Product Type | DIO head-end adaptor |
| Number of Ports | 1 Modbus Plus fiber optic/single copper + 1 Modbus RS232 twisted pair |
| Transmission Rate | 1 Mbit/s |
| Electrical Connection | 1 RJ45 connector, 2 TX/RX connectors |
| I/O Words | 30 input words, 32 output words |
| Power Dissipation | 4 W |
| Pulse Width Distortion/Jitter | ≥ 5 ns |
| Wavelength | 820 nm |
| Dynamic Range | 20 dB |
| Detected Silence | -36 dBm |
| Sensitivity Scale | > 30 dBm |
| Bus Current Requirement | 750 mA |
Operating Temperature: 0°C to 60°C (32°F to 140°F)
Storage Temperature: -40°C to 85°C (-40°F to 185°F)
Relative Humidity: 95% without condensation
Operating Altitude: Up to 5000 m (16404 ft)
EMC Immunity: Resistance to electromagnetic fields at 10 V/m from 80 to 2000 MHz per IEC 801-3
The 140NOM25200 complies with UL 508 standards and holds multiple certifications including CSA Class 1 Division 2, DNV, GL, GOST, RINA, RMRS, and C-Tick. These certifications validate its suitability for use in hazardous locations and demanding industrial environments where regulatory compliance is mandatory.
Industrial automation and control systems
Process control and monitoring networks
Distributed I/O systems requiring Modbus Plus communication
Integration of legacy Modbus RS232 devices into modern Quantum systems
Factory floor data acquisition and supervisory control
The 140NOM25200 seamlessly integrates with the Modicon Quantum family of programmable automation controllers. It is compatible with standard Quantum backplanes and can be configured using Schneider Electric‘s Unity Pro software platform. The adaptor supports both fiber optic and copper physical media, giving system designers the flexibility to choose the appropriate transmission medium based on distance requirements and environmental conditions. For fiber optic installations, the module accommodates three common fiber types: 50/125 µm, 62.5/125 µm, and 100/140 µm, with corresponding power loss budgets optimized for each type.
© 2026 Technical Documentation. All specifications are for reference and informational purposes only.



