140NRP31201C
May 23, 2026

140NRP31201C

The 140NRP31201C is a conformal-coated single-mode (SM) fiber‑Ethernet media converter for the Modicon Quantum PLC platform. It extends RIO (Remote I/O) and Modbus TCP/Ethernet communication over long‑distance fiber links, featuring 2×LC single-mode fiber ports and 2×RJ45 copper ports for 100 Mb/s conversion. The “C” suffix denotes conformal coating, providing enhanced protection against dust, moisture, and corrosive gases in harsh industrial environments.

Description

1. General Description

The 140NRP31201C is a conformal-coated single-mode (SM) fiber‑Ethernet media converter for the Modicon Quantum PLC platform. It extends RIO (Remote I/O) and Modbus TCP/Ethernet communication over long‑distance fiber links, featuring 2×LC single-mode fiber ports and 2×RJ45 copper ports for 100 Mb/s conversion. The “C” suffix denotes conformal coating, providing enhanced protection against dust, moisture, and corrosive gases in harsh industrial environments.

2. Product Overview

  • Model: 140NRP31201C (Single‑mode, SM, Conformal‑coated)

  • Function: 2‑channel 100 Mb/s Ethernet ↔ single‑mode fiber conversion

  • Fiber: Single‑mode (9/125 µm), LC connectors

  • Copper: 2×RJ45, 10/100 Mb/s auto‑negotiation

  • Protocol: Quantum RIO, Modbus TCP, Ethernet/IP (via adapter)

  • Redundancy: Supports fiber link redundancy and RSTP

  • Coating: Conformal coated (improved reliability in harsh conditions)

3. Technical Specifications

Electrical

  • Backplane voltage: 5 V DC

  • Current consumption: 1000 mA (max)

  • Power dissipation: 5 W (max)

  • Inrush current: 1 A @ 5 V DC

Optical (Single‑mode, 1310 nm)

  • Tx wavelength: 1310 nm

  • Rx sensitivity: −30 dBm

  • Detect silence: −45 dBm

  • Attenuation range: −23.5 to −14 dBm

  • Max distance (9/125 µm): Up to 10 km (depends on link budget)

Environmental

  • Operating temperature: 0 °C to +60 °C

  • Storage temperature: −40 °C to +85 °C

  • Humidity: 0–95% RH, non‑condensing

  • Altitude: Up to 2000 m

  • Protection: Conformal coated (dust, moisture, corrosion resistance)

  • Standards: CE, UL 508, CSA C22.2 No.142, FM Class 1 Div 2, RoHS

Physical

  • Dimensions: Standard Quantum module (250 mm × 103.85 mm × 40.34 mm)

  • Mounting: Quantum rack slot, hot‑swap capable

  • Connectors: 2×LC (fiber), 2×RJ45 (copper)

  • Weight: Approx. 0.5 kg

4. LED Indicators

  • RDY (Green): Solid = Module operational; Blinking = Initialization/self‑test

  • ERR (Red): Solid = Hardware/config fault; Blinking = Minor alarm

  • STS1/FX1 ACT (Green): Channel 1 link/activity

  • STS2/FX2 ACT (Green): Channel 2 link/activity

5. Installation

  1. ESD protection: Wear anti‑static wristband before handling.

  2. Power off: Disconnect rack power before insertion/removal.

  3. Insert module: Align with empty Quantum slot, push firmly, tighten screw.

  4. Connect cables:

    • Fiber: LC connectors (Tx ↔ Rx between devices)

    • Copper: RJ45 to switch/PLC/IO

  5. Cable management: Avoid sharp bends; secure cables to prevent tension.

  6. Power on: Restore power; verify RDY LED solid green.

6. Configuration

Software

  • Compatible with EcoStruxure Control Expert 14.0+ (Unity Pro)

  • No programming required for basic conversion; set network parameters in hardware config.

Network Settings

  • Set IP, subnet mask, gateway for copper ports (if using Modbus TCP).

  • Enable RIO fiber link in Quantum CPU configuration.

  • Configure redundancy (RSTP) if required.

7. Operation

  • Normal: RDY solid green; ACT LEDs blink on data transfer.

  • Fiber link: Tx/Rx must be crossed between two modules.

  • Redundancy: Automatically switches to backup fiber link on primary failure.

  • Hot swap: Replace module without stopping the system (same model).

8. Maintenance & Troubleshooting

Routine Maintenance

  • Inspect cables/connectors monthly; clean fiber ends with lint‑free cloth.

  • Check LED status; update firmware via Control Expert if needed.

  • Conformal coating reduces cleaning frequency; avoid harsh chemicals.

Common Issues

  • RDY off: Backplane power fault or poor contact → Reseat module, check power.

  • ERR solid: Config mismatch or hardware damage → Verify config, replace module.

  • No fiber link: Tx/Rx reversed, dirty connectors, or cable break → Check polarity, clean, replace cable.

  • Copper port no link: Cable fault or speed mismatch → Replace cable, check auto‑negotiation.

9. Safety & Compliance

  • Install/maintain only by qualified personnel.

  • Disconnect power before servicing.

  • Use only approved fiber/copper cables.

  • Comply with local EMC and safety regulations.

10. Ordering Information

  • 140NRP31201C: Single‑mode fiber converter (2×LC, 2×RJ45, 100 Mb/s, conformal coated)

  • 140NRP31201: Non‑coated single‑mode version (reference only)

  • 140NRP31200C: Conformal coated multi‑mode version (reference only)


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