Product Overview
When your legacy Modicon system requires upgraded communication capabilities, the Schneider 140NOM21200C provides a direct path forward. This DIO head-end adaptor from the Modicon Quantum series delivers versatile connectivity with two Modbus RS-485 interfaces and one Modbus RS-232 interface, enabling robust industrial automation. The Schneider 140NOM21200C ensures reliable data transmission at up to 1 Mbps, making it a critical component for modernizing control networks.
Technical Specifications
The following specifications are derived from the product documentation:
| Specification |
Value |
| Interfaces |
2 Modbus RS-485, 1 Modbus RS-232 |
| Transmission Rate |
1 Mbps |
| I/O Words |
30 Input / 32 Output |
| Power Dissipation |
4 W |
| Bus Current Requirement |
780 mA |
| Ambient Temperature (Operation) |
0 to 60 °C |
| Humidity |
95% without condensation |
| Operating Altitude |
≤ 5000 m |
| Protective Treatment |
Conformal coating |
| Resistance to Electrostatic Discharge |
4 kV contact / 8 kV air |
| Standards |
UL 508 |
Real-World Applications
In discrete manufacturing, the 140NOM21200C from Schneider provides reliable remote I/O communication over long distances using Modbus RS-485. The adaptor handles up to 30 input and 32 output words, making it suitable for medium-scale automation cells. For example, in a packaging line upgrade, the 140NOM21200C replaces older single-interface units, consolidating communication and reducing wiring complexity.
Compatibility and Integration
The Schneider 140NOM21200C integrates seamlessly with Modicon Quantum controllers and compatible remote I/O modules such as 140CRA21210 and 140CRA21220. Its dual RS-485 ports support redundant twisted-pair copper connections, while the RS-232 port enables direct connection to HMI or SCADA systems. This flexibility simplifies integration into existing industrial networks.
Selection and Purchasing Advice
Before purchasing the 140NOM21200C, verify that your control system supports Modbus RTU protocol over RS-485 or RS-232. Confirm bus current availability (780 mA) from your backplane. For expert assistance, contact UBEST Automation via ubest101 to ensure compatibility with your specific Quantum chassis and firmware revision.