4201RXM | Triconex RXM Module for Fault-Tolerant Communication

Product Description

Overview

The Triconex 4201RXM is a high-performance redundant communication module designed for safety-critical industrial environments.
It extends Tricon I/O bus signals to remote chassis, enabling I/O modules to operate kilometers away from the main system.
Moreover, RXM sets act as repeaters while providing ground loop isolation to prevent signal interference.
The module’s triple modular redundancy (TMR) architecture ensures continuous operation even in the event of hardware failures.
Engineered for industrial conditions, the 4201RXM delivers reliable, fault-tolerant communication in harsh environments.

Technical Specifications

• Product Type: Redundant Communication Module (RXM)

• Model Number: 4201RXM

• Manufacturer: Schneider Electric (Triconex brand)

• System Compatibility: Triconex SIS (Tricon/Trident platforms)

• Architecture: Triple Modular Redundancy (TMR)

• Communication Interfaces: Ethernet 10/100 Mbps, RS‑232/RS‑485 serial ports

• Protocols Supported: Modbus TCP/IP, Modbus RTU, OPC, Triconex peer-to-peer

• Redundancy: Dual redundant communication channels

• Diagnostics: Built-in self-diagnostics, link monitoring, redundancy health checks

• Power Supply: 24 VDC nominal (range 18–30 VDC)

• Power Consumption: 30 W maximum

• Cable Type: Multi-mode fiber optic

• Cable Length Limit: Up to 2 km (1.2 miles)

• Connectors: 6 Fiber Optic with ST Modem Ports

• Operating Temperature: –40 °C to +70 °C

• Storage Temperature: –40 °C to +85 °C

• Humidity Range: 10–95% non-condensing

• Dimensions (H × W × D): 410 × 280 × 160 mm

• Weight: 1.8 kg

• Certifications: CE, UL, ATEX, IECEx

FAQ

Q1: What is the maximum distance this RXM module can extend I/O signals?
The 4201RXM supports up to 2 km (1.2 miles) for remote chassis connectivity.

Q2: Which communication protocols does it support?
It supports Modbus TCP/IP, Modbus RTU, OPC, and Triconex peer-to-peer protocol.

Q3: Is it fault-tolerant for safety-critical applications?
Yes, the TMR architecture and dual redundant channels provide SIL 3-level fault tolerance.

Q4: Can it operate in harsh environments?
Moreover, it withstands temperatures from –40 °C to +70 °C and resists vibration and EMI interference.

Q5: How many remote locations can one primary RXM set serve?
A primary RXM set can link to three remote RXM sets in separate chassis simultaneously