Modicon Momentum Serial Link Adapter 172JNN21032 Schneider

Product Overview

The 172JNN21032 is a serial communication option adapter engineered by Schneider Electric for the Modicon Momentum automation platform. This module extends the communication capability of a Momentum I/O base by providing a configurable serial interface for field-level data exchange.

Designed for systems that require stable serial connectivity, the adapter supports selectable RS232 or RS485 communication, allowing integration with Modbus-based devices such as PLCs, operator panels, and instrumentation equipment.

Communication and Hardware Design

The module provides a single serial communication port configurable for RS232 or RS485 operation. Electrical connection is achieved through a 9-pin D-sub connector, supporting Modbus serial communication. Local operational status is indicated by an onboard communication LED, allowing quick diagnostics during commissioning and maintenance.

Power is supplied directly through the Momentum I/O base, eliminating the need for external wiring. A built-in lithium battery maintains internal timekeeping functions, ensuring stable operation even during brief power interruptions.

Technical Specifications

• Model: 172JNN21032

• Product Type: Serial Link Option Adapter

• Manufacturer: Schneider Electric

• Automation Platform: Modicon Momentum

• Number of Ports: 1

• Communication Interface: RS232 or RS485 (selectable)

• Supported Communication: Modbus serial

• Connector Type: 9-pin D-sub

• Rated Supply Voltage: 5 V DC ±5% (via I/O base)

• Current Consumption: approx. 700 mA

• Clock Accuracy: ±13 seconds per day

• Battery Type: Lithium, size 2/3 AA

• Battery Life: approx. 5 years

• Battery Backup Autonomy: less than 30 days after low-battery indication at 40 °C

• Status Indication: 1 communication LED

• Housing Material: Lexan

• Module Format: Standard Momentum module

• Dimensions:

• Height: 25 mm

• Width: 143.1 mm

• Depth: 60.06 mm

• Net Weight: 85 g

• Compliance: CE marked