1. General Description

2. Product Identification

• Model Number: 170NEF16021

• Manufacturer: Schneider Electric (Modicon)

• Product Line: Modicon Momentum (TSX Momentum)

• Protocol: Modbus Plus (MB+), 984 data format

• Network Type: Dual‑port (single‑cable or dual‑cable redundant)

• Ports: 2 × shielded RJ45 (MB+ Port A / Port B)

• Data Rate: Up to 1 Mbps

• Power: 24 VDC (supplied via I/O base)

• Power Consumption: ~2.4 W

• Dimensions: 90 mm × 160 mm × 60 mm (W×H×D)

• Weight: ~0.6 kg (1.3 lb)

• Mounting: DIN rail (via I/O base)

• Warranty: 18 months

• Country of Origin: France

• Status: Active (as of 2026)

3. Electrical & Environmental Specifications

• Communication Interface: 2 × shielded RJ45 (MB+ pinout)

• Signaling: RS485 differential, 1 Mbps, 984 format

• Cable: Shielded twisted pair (MB+ compliant)

• Max Network Length: 5,000 m (16,400 ft) with repeaters

• Operating Voltage: 24 VDC ±10% (from I/O base)

• Operating Temperature: -25 °C to +60 °C (-13 °F to 140 °F)

• Storage Temperature: -40 °C to +85 °C (-40 °F to 185 °F)

• Humidity: 5%–95% RH (non‑condensing)

• Altitude: Up to 1,000 m (3,280 ft) (no derating)

• Protection Class: IP20 (indoor use)

• Certifications: UL, CSA, CE, RoHS

• Compliance: California Prop 65 (lead warning)

• EMI Immunity: 10 V/m (electromagnetic fields); 4 kV/8 kV ESD

4. Compatibility

• Platforms: Modicon Momentum (170 series), Quantum, Premium

• I/O Bases: All Momentum I/O bases (170 series)

• PLCs: Modicon 984, Quantum, Premium, M340 (with MB+ interface)

• Software: Unity Pro, MB+ Network Configurator, 984 Ladder Logic

• Topologies: MB+ peer‑to‑peer, master‑slave, linear trunk/drop, redundant (dual‑cable)

5. Key Features

• Dual‑Port MB+ (A/B): Supports standard or redundant MB+ networks (fault‑tolerant)

• 1 Mbps MB+ Speed: Deterministic, high‑speed data transfer

• Dual RJ45 Ports: Daisy‑chain, star, or redundant topology support

• Hot‑Swap Ready: Replace adapter without network shutdown

• LED Status Indicators:

  • PWR (Green): Module powered up

  • MB+ ACT (Green): Network communication active

  • ERR A (Red): Network A communication error

  • ERR B (Red): Network B communication error

• Shielded Connectors: EMI/RFI immunity for harsh environments

• Easy Installation: Clips lock adapter to I/O base (no tools)

6. Applications

• Distributed I/O in Momentum racks (MB+ network)

• High‑speed PLC‑to‑I/O and PLC‑to‑PLC communication

• Redundant MB+ networks (critical/high‑availability systems)

• Factory floor automation (material handling, packaging, process control)

• Retrofit of legacy 984 systems with modern Momentum I/O

• Compact panel and machine‑mounted I/O solutions

7. Installation Instructions

1. Power Off: Disconnect power to the Momentum I/O base.

2. Align Adapter: Slide the 170NEF16021 onto the I/O base’s communication connector.

3. Lock in Place: Press until the side clips click, securing the adapter.

4. Connect MB+ Cables:

   • Standard Network: Plug shielded RJ45 cable into Port A.

   • Redundant Network: Plug cables into both Port A and Port B.

5. Terminate Network: Ensure 120 Ω termination resistors are installed at both ends of each MB+ trunk.

6. Power On: Restore power; verify PWR and MB+ ACT LEDs illuminate.

7. Configure Network: Use Unity Pro or MB+ Configurator to set the adapter’s unique MB+ address and enable redundancy (if required).

8. Maintenance

• Quarterly Inspection: Check RJ45 connectors for wear, dirt, or bent pins.

• LED Check: Verify PWR is on and MB+ ACT flashes during communication.

• Cable Care: Avoid sharp bends, vibration, or stress on MB+ cables.

• Shield Integrity: Ensure shield is grounded at one end only (MB+ standard).

• Replacement: Replace adapter if ERR A/B is steady or communication fails (after cable/termination check).

9. Safety Precautions

• Qualified Personnel: Installation/service by qualified technical staff only.

• Power Disconnection: Always disconnect power before installing/removing the adapter.

• Indoor Use Only: For indoor industrial environments; avoid moisture, direct sunlight.

• Damage Check: Do not use if adapter, connectors, or insulation are damaged.

• Disposal: Dispose per local electronic waste regulations.

10. Troubleshooting

No MB+ Communication (Port A or B)

• Confirm PWR LED is on (24 VDC power to I/O base).

• Check RJ45 cable is fully seated and locked.

• Verify 120 Ω termination at trunk ends.

• Ensure unique MB+ address (no duplicates).

Intermittent Communication

• Inspect for loose RJ45 connectors or bent pins.

• Check for excessive vibration or cable movement.

• Verify shield is grounded at one end only.

• Reduce network load or check for faulty nodes.

ERR A or ERR B (Red LED) On

• MB+ network fault (short circuit, open cable, or duplicate address).

• Check cable continuity and termination.

• Verify no other node uses the same MB+ address.

• In redundant mode, check both networks for faults.