Overview

The Schneider Electric TSX3721101 is a modular PLC from the Modicon TSX Micro series, designed for small to mid-scale industrial automation systems. Featuring a 3-slot base chassis, it supports flexible expansion with various I/O and communication modules, making it a versatile controller for diverse operational needs.

This controller includes integrated Uni-Telway and Modbus RTU serial communication ports for seamless device integration. It also supports PCMCIA memory cards for extended program storage and data logging. Engineered for high-speed processing and robust performance, the TSX3721101 is widely used in manufacturing, utilities, and infrastructure automation where reliability and modular design are essential.

Technical Data

Application

Typical industries and use cases include:

• Discrete manufacturing systems—conveyor control, machine sequencing

• Water treatment and utilities—pump stations, dosing system control

• Building automation—HVAC management and facility monitoring

• Legacy system modernization—compact PLC replacement with Modbus support

Its PCMCIA memory capability and built-in real-time clock enable time-critical operations, data retention, and batch process control. Therefore, the TSX3721101 continues to serve as a reliable controller for installed base maintenance and operational continuity.

FAQ

Q: Is the TSX3721101 still available for purchase?
A: No, it was discontinued on December 31, 2019, but Schneider Electric provides service support until December 31, 2027.

Q: What communication protocols are supported?
A: Uni-Telway and Modbus RTU via serial ports.

Q: Can I expand module capacity?
A: Yes, the system can be expanded to 5 slots using a micro rack.

Q: What type of memory expansion is supported?
A: PCMCIA cards for extended memory and enhanced processing.

Q: Is it suitable for industrial environments?
A: Yes, it meets IEC Level 3 EMC requirements and operates reliably from 0°C to +60°C.