140NOM21200 Schneider Electric PLC Communication Processor
Manufacturer: Schneider
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Part Number: 140NOM21200
Condition：New with Original Package
Product Type: PLC Communication Modules
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Country of Origin: France
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The 140NOM21200 serves as a critical communication bridge within the Modicon Quantum architecture. It facilitates high-speed, 1 Mbit/s data transfers using the deterministic token-passing Modbus Plus protocol. This module allows a Quantum PLC to command distributed I/O drops and engage in complex interlocking with up to 64 peer controllers. We offer this unit as a 100% Brand New, original factory-sealed component, ensuring your mission-critical networks operate without the latency or hardware failures associated with used parts.
Technical Specifications
| Parameter | Technical Detail |
| Protocol | Modbus Plus (MB+) |
| Transmission Rate | 1 Mbit/s |
| Port Configuration | 2 x RS485 (Redundant Copper), 1 x RS232 |
| Node Capacity | Up to 64 nodes per network segment |
| I/O Capacity | 30 Input words / 32 Output words |
| Topology | Peer-to-peer, Multi-drop, or Distributed I/O |
| Internal Integrity Checks | RAM, Processor, RAM Address, Checksum |
| Power Consumption | 5 W (from backplane) |
| Operating Temp | 0°C to +60°C |
| Compatibility | 140CRA21210 / 140CRA21220 DIO modules |
Engineering Advantages
The 140NOM21200 eliminates communication bottlenecks and enhances system resilience through several engineering-focused features:
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Deterministic Networking: Unlike standard Ethernet, the Modbus Plus token-passing protocol ensures predictable data arrival times. This prevents network collisions and makes the 140NOM21200 ideal for high-speed process synchronization.
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Built-in Redundancy: The dual RS485 redundant copper ports allow for a "cable redundancy" setup. If one trunk cable sustains damage, the module maintains communication via the secondary port, preventing a total system shutdown.
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Advanced Self-Diagnostics: The module executes continuous background checks on its internal RAM and processor health. If a checksum error or address fault occurs, the module triggers an immediate diagnostic LED pattern, allowing for rapid hardware isolation.
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Hot-Swappable Maintenance: Maintenance crews can replace a 140NOM21200 module without powering down the Quantum rack. This feature reduces Mean Time to Repair (MTTR) and maintains the availability of the rest of the PLC system.
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Scalable Architecture: Supporting up to 64 nodes per segment, this module allows for easy expansion. Engineers can integrate additional I/O drops or peer PLCs into the existing network with minimal reconfiguration.
FAQs
How do I configure the node address for the 140NOM21200?
The node address is typically set via hardware rotary switches located on the side or rear of the module. Ensure each node on the Modbus Plus network has a unique address between 1 and 64 to avoid network conflicts.
Can this module act as a head-end for remote I/O?
Yes. The 140NOM21200 specifically functions as a DIO head-end adaptor. It coordinates communication with 140CRA21210 or 140CRA21220 remote drops, allowing the central Quantum CPU to treat remote signals as local data.
What is the maximum cable distance for a network using this module?
Using standard shielded twisted-pair copper cable, a single Modbus Plus segment can reach up to 450 meters (1,500 feet). For longer distances, you must utilize repeaters or fiber optic bridges to maintain signal integrity at 1 Mbps.
Does this module require external power?
No. The 140NOM21200 draws its operating power (~5 W) directly from the Quantum backplane. However, the Modbus Plus network itself must be properly terminated with 220-ohm resistors at both ends of the trunk to prevent signal reflection.