Product details
140NOM21200 – Modicon Quantum DIO Head-End Adaptor
Description
The 140NOM21200 is a DIO head-end adaptor from Schneider Electric’s Modicon Quantum platform.
It provides 2 redundant Modbus+ RS485 copper ports and 1 Modbus RS232 port.
This module handles 30 input and 32 output words. It runs at 1 Mbit/s transmission rate.
Built for critical automation, it ensures reliable communication in harsh industrial environments.
Technical Specifications
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Brand & Model: Schneider Electric / 140NOM21200 - ▸
Series: Modicon Quantum – DIO Head-End Adaptor - ▸
Ports: 2 Modbus+ RS485 (redundant copper) + 1 Modbus RS232 - ▸
Transmission Rate: 1 Mbit/s - ▸
I/O Capacity: 30 input words / 32 output words - ▸
Power Dissipation: 4 W - ▸
Bus Current: 780 mA - ▸
Compatibility: 140CRA21210, 140CRA21220 - ▸
Diagnostics: RAM checksum, processor self-test - ▸
ESD Immunity: 4 kV contact / 8 kV air (IEC 801-2) - ▸
RF Immunity: 10 V/m at 80–2000 MHz (IEC 801-3) - ▸
Operating Temp: 0 to 60 °C (32 to 140 °F) - ▸
Storage Temp: -40 to 85 °C (-40 to 185 °F) - ▸
Humidity: 95% non-condensing - ▸
Altitude: ≤ 5000 m (16404 ft) - ▸
Weight: 493 g (17.4 oz) - ▸
Certifications: CSA, FM Class 1 Div 2, GOST, GL, RINA, RMRS, DNV, C-tick - ▸
Standards: UL 508
Installation & Maintenance
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Mounting: Snap onto Quantum rack. Ensure proper grounding. - ▸
Cable: Use shielded twisted-pair for RS485. Keep unterminated stubs short. - ▸
LED status: Power, active, and fault indicators simplify troubleshooting. - ▸
Maintenance: Replace module without powering down rack (hot-swap capable). - ▸
Redundancy: Dual Modbus+ ports support automatic failover for critical links.
Typical Applications
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Oil & gas: Remote I/O for offshore platforms - ▸
Power generation: Turbine control with redundant communication - ▸
Water treatment: Distributed SCADA over Modbus+ network - ▸
Mining: Conveyor control with high noise immunity
Diagnostic Capabilities
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On-board RAM checksum validates memory integrity. - ▸
Processor self-test runs at power-up and continuously. - ▸
Link status LEDs show Modbus+ activity and faults. - ▸
Diagnostic counters track CRC errors and retries.
Package & Delivery
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Box includes: 140NOM21200 module, mounting screws, quick reference card - ▸
Warranty: 12 months against defects - ▸
Shipping: Dispatch within 12–24 hours via FedEx, UPS, or DHL - ▸
Packaging dimensions: 31 x 16 x 4.6 cm (12.2 x 6.3 x 1.8 in)
Frequently Asked Questions
Q: Does the 140NOM21200 support hot-swap?
A: Yes. You can replace it while the rack remains powered.
Q: What is the maximum cable length for Modbus+?
A: Up to 500 m with twisted-pair copper. Use repeaters for longer runs.
Q: Can I use both Modbus+ ports simultaneously?
A: Yes. They operate in redundant mode. One active, one standby.
Q: Is this module compatible with older Quantum CPUs?
A: It works with most Quantum CPUs. Check firmware version for full support.
Q: What diagnostics does the 140NOM21200 provide?
A: RAM checksum, processor test, and link quality counters.
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