TSX3721101 Schneider Electric Modicon Modular Base Controller

Global PLC Spare HUB's Insight

The TSX3721101 bridges the gap between basic micro-PLCs and large-scale process controllers. It utilizes a sophisticated dual-bus architecture supporting Modbus RTU and Uni-Telway protocols simultaneously. This ensures deterministic logic execution even when the TSX3721101 is under heavy communication load. For engineers managing legacy infrastructure, this module provides the necessary interrupt-driven logic capabilities (up to 16 event tasks) required for high-speed counting and precise motion synchronization.

Technical Performance Matrix

• Brand: Schneider Electric / Modicon
• Model Number: TSX3721101
• Series: TSX Micro 37
• Slot Count: 3 Integrated Slots
• Internal Memory: 128 Kwords RAM (Data Storage)
• Execution Speed: 0.13 µs Boolean / 4.5 µs REAL floating
• Network Port 1: Modbus RTU (19.2 kbit/s)
• Network Port 2: Serial Link TER/AUX (Uni-Telway)
• Task Structure: 1 Master / 1 Fast / 16 Event Tasks
• Secondary Power: 16 W Useful output
• Protection: Integrated Overload and Short-circuit protection
• Operating Temperature: 0°C to 60°C
• Physical Weight: 1.72 kg industrial chassis

System Compatibility and Typical Applications

• Compatible with all Modicon TSX Micro discrete and analog I/O modules.
• Supports PCMCIA memory expansion cards for extended program logic.
• Ideal for small-to-medium material handling and conveyor synchronization.
• Widely used in HVAC control systems requiring event-based scheduling.
• Integration into existing Uni-Telway serial automation networks.

Advanced Diagnostic Capabilities

• Integrated Real-time Clock (RTC) for precise fault time-stamping.
• Visual front-panel LED indicators for CPU health and bus activity.
• System overhead monitoring with 1.6 ms master task transparency.
• Object area tracking for 256 %Mi and 128 %KWi constants.
• Software-accessible registers for real-time communication link status.

Procurement and Logistics

• Warranty Support: Includes a full 12-month professional warranty.
• Shipping Carriers: Global priority delivery via FedEx, UPS, and DHL.
• Order Dispatch: Every TSX3721101 ships within 24-48 hours.
• Quality Assurance: High-grade components tested for industrial reliability.

Selection and Buying Guide

• Calculate the 16W secondary power limit before adding multiple I/O modules.
• Verify if your TSX3721101 requires a PCMCIA card for additional memory.
• Ensure the programming software supports the 19.2 kbit/s Uni-Telway baud rate.
• Check cabinet depth to accommodate the 152 mm module profile and cabling.

Frequently Asked Questions (FAQ)

• Does the TSX3721101 require a battery for the real-time clock?
• The internal RTC is maintained, but critical data retention depends on the RAM battery health.
• What is the maximum number of event tasks available?
• This controller supports 16 event tasks for high-priority process interrupts.
• Can I use a PCMCIA card to improve Boolean execution speed?
• Yes, adding a card changes the 100% Boolean execution time to 4 ms per 1K instructions.
• Are the Modbus and TER/AUX ports isolated from each other?
• They function as independent logical connections allowing simultaneous communication.
• Is the 16W secondary power sufficient for a fully loaded 3-slot rack?
• Based on experience, you must sum the power draw of each module; high-density analog cards may require careful planning.

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