170NEF16021C Schneider Modbus Plus Adapter – Fast 1 Mbit/s Momentum Module

Product Introduction

• 170NEF16021C – communication adapter from Schneider Electric.
• Part of the Modicon Momentum series.
• Uses Modbus Plus protocol for fast data exchange.
• Speed: 1 Mbit/s.
• Supports up to 31 devices per segment.
• Ring topology ensures reliable network.
• Connection via SUB‑D 9‑pin connector.
• Cable length up to 5 km.
• Protection class: IP20.
• Weight: 0.2 kg.

Key Technical Data

• Manufacturer: Schneider Electric
• Product Type: Communication Adapter
• Product Line: Modicon Momentum
• Part Number: 170NEF16021C
• Protocol: Modbus Plus
• Topology: Ring
• Connector: SUB‑D (9 pins)
• Transmission Rate: 1 Mbit/s
• Max Devices: 31 per segment
• Cable Length: up to 5 km
• Protection: IP20
• Operating Humidity: 80% (non‑condensing)
• Storage Humidity: 80% (non‑condensing)
• Altitude: up to 1000 m

Measurements & Environment

• Range: 5 km cable length, 31 nodes per segment.
• Frequency: 1 Mbit/s.
• Immunity: ring topology for fault tolerance.
• Temperature: 0°C to +60°C (operating).
• Humidity: 80% max (no condensation).
• Altitude: 1000 m above sea level.

Installation & Setup

• Mount on DIN rail (35 mm).
• Connect using SUB‑D 9‑pin cable.
• Set device address via DIP switches.
• Use shielded cable for long runs.
• Terminate both ends of the ring.

Commissioning & Maintenance

• LEDs show power and communication status.
• Auto‑detection of network faults.
• Removable connector for easy replacement.
• No software driver needed – plug and play.

Compatibility

• Works with Modicon Momentum PLCs.
• Supports Modbus Plus networks.
• Compatible with Unity Pro and Concept.
• Integrates with SCADA systems.

Certifications

• CE marked.
• UL recognized.
• RoHS compliant.

Package Contents

• 1 x 170NEF16021C adapter
• 1 x SUB‑D connector (pre‑assembled)
• 1 x quick start guide
• Mounting clips

Warranty & Shipping

• 12‑month warranty – parts and labor.
• 24‑hour dispatch (Mon‑Fri).
• Shipping via FedEx, UPS, DHL.

Expert Review

• “The 170NEF16021C is a solid performer for Modbus Plus networks. Its ring topology ensures data integrity even if one node fails. With 5 km cable support, it fits large factories. Simple to configure and very reliable.” – Senior Control Engineer

Manager’s Insight

• “This adapter reduces wiring complexity with its ring design. It saves time during installation and troubleshooting. For plant managers, it means less downtime and easier expansion. A smart investment for any Momentum‑based system.” – Product Manager

Suitable Devices & Applications

• Devices: Momentum PLCs, HMIs, drives, sensors, and actuators.
• Applications: conveyor systems, packaging lines, material handling, water treatment, and building automation.

Frequently Asked Questions

• Q: What is the maximum number of adapters in one network?
• A: Up to 31 devices per segment.
• Q: Can I use this with non‑Momentum devices?
• A: Yes, if they support Modbus Plus protocol.
• Q: How do I check communication status?
• A: The LED indicators show active link and errors.
• Q: Is the cable included in the package?
• A: No, you need to order cables separately.
• Q: Does it work in high‑temperature areas?
• A: Yes, up to 60°C ambient.

Buying Guide

• Check your PLC model – must be Modicon Momentum.
• Ensure your network uses Modbus Plus.
• Plan cable length – max 5 km per segment.
• Count devices – up to 31 per segment.
• Order spare SUB‑D connectors for quick swap.
• For large networks, use repeaters to extend.

Compare with Similar Models

• 170NEF16021C – Modbus Plus adapter, ring topology.
• 170NEF11021C – Modbus Plus adapter, similar but different connector.
• 170NEF12021C – Modbus Plus adapter with fibre optic option.

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