PLCs, Power Supplies & Others

The Schneider ALU 201L serves as a central processing unit for Modicon M340 PLCs. This module executes user logic and manages all I/O operations efficiently. You will find this processor in factory automation and process control applications. It handles discrete and analog control tasks with ease.

Manufacturer: Schneider Electric
Series: Modicon M340
Category: CPU Module (Central Processing Unit)

Physical Dimensions and Weight

The Schneider ALU 201L measures 3.9 inches in height. Its width reaches 1.1 inches for single-slot occupancy. The depth goes to 3.4 inches including connectors. This compact design fits into any M340 rack. The total weight comes to approximately 0.3 kilograms.

Technical Specifications and Processing Power

This CPU module uses a 32-bit RISC processor architecture. It operates at a clock speed of 150 MHz. The module stores user programs in 256KB of battery-backed RAM. Additionally, it holds 1MB of flash memory for firmware storage. The typical scan time reaches 0.3 milliseconds per 1,000 instructions.

Energy Storage and Data Retention

The Schneider ALU 201L includes a replaceable lithium battery for RAM backup. This battery provides 12 months of data retention without external power. A supercapacitor array adds 72 hours of temporary backup during battery changes. Therefore, you can replace the battery without losing your program. The module also stores critical parameters in non-volatile flash memory.

Interface and Connectivity

This CPU module features multiple communication interfaces for flexibility. A built-in Ethernet port supports 10/100 Mbps network connections. One USB port connects to programming terminals easily. The front panel includes an 8-position mode selector switch. Five LED indicators show RUN, STOP, and fault status clearly.

Component Layout and Memory Architecture

The Schneider ALU 201L contains 110 discrete components on a six-layer PCB. Key parts include the main CPU chip and 16 memory ICs. The memory architecture divides into three distinct regions. Program blocks occupy 128KB of the address space. Data blocks use another 64KB, and system variables use 32KB. The remaining 32KB serves communication buffers and diagnostics.

Integration and Compatibility

Use the Schneider ALU 201L with any Modicon M340 I/O rack. It works alongside BMX series I/O modules and accessories. This processor supports all standard M340 configuration software. For similar industrial control solutions, explore the RMS-TSG-TZ-C Static Trip device [link removed per instruction]. Order this original Schneider CPU to power your automation system reliably.

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