The TSX-LES70 is a junction or extension module (often called a “junction box” or “transition block”) designed for Schneider Electric’s Modicon TSX Micro line of programmable logic controllers (PLCs). Its primary function is to provide a convenient and secure connection point between the PLC’s controller base and additional I/O (Input/Output) expansion modules.
It is a genuine Schneider Electric product, manufactured in France, and is typically supplied new in its original box.
Key Features and Functions
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I/O Expansion Interface: Serves as a dedicated connection block for adding extra I/O modules (like digital inputs/outputs, analog modules, etc.) to a Modicon TSX Micro PLC system. It allows you to extend the capabilities of your controller beyond its local I/O capacity.
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Bus Connection: The module contains the necessary internal bus system to seamlessly transfer data and power between the main PLC controller and the expansion modules connected to it.
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Physical Mounting and Alignment: It features a mechanical design with guiding notches and a locking lever that ensures a secure, vibration-resistant connection between adjacent modules on the DIN rail. This “blind connection” system makes installation and maintenance quick and error-proof.
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Compact and Integrated Design: As part of the TSX Micro platform, it is designed for a compact footprint, saving valuable space in control panels.
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Status Indication: The module typically includes LED indicators to show the status of the bus connection and power, aiding in system diagnostics and troubleshooting.
Technical Specifications
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Manufacturer Brand: Schneider Electric
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Product Line: Modicon TSX Micro
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Reference / Part Number: TSX-LES70 (also written as TSXLES70)
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Product Type: Junction / Extension Module (Transition Block)
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Compatible Series: Modicon TSX Micro (e.g., models like TSX 37 series)
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Origin: Manufactured in France.
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Condition: New, in original packaging (as typically supplied).
Typical Applications
The TSX-LES70 is used in a wide range of industrial automation and control applications where a compact and modular PLC system is required. Common sectors include:
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Machine Automation
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Conveyor Systems
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Packaging Machinery
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Building Management Systems (BMS)
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Small to medium-sized process control applications









