Schneider ALU 154 CPU Module | 16k Word Memory RS-232 Port

Why This CPU Module Powers Your Automation System

This central processor handles logic execution for medium-scale applications. You get a dependable Schneider ALU 154 for Modicon series controllers. It supports up to 16k words of user program memory. Therefore, your system can manage complex ladder logic without slowdowns.

Technical Specifications and Physical Details

The Schneider ALU 154 integrates a built-in power supply for standalone operation. It features one RS-232 serial port for programming and diagnostics. This module fits into a standard DIN rail mountable housing. Its dimensions measure approximately 130 mm in width and 100 mm in height. The unit weighs around 0.65 kg for secure panel installation. This CPU stores its program in battery-backed RAM. Consequently, your logic remains safe for up to six months without external power.

Below is the detailed breakdown of the hardware specifications.

Parameter	Specification
Product Model	ALU 154
Product Type	CPU Module
Brand	Schneider Electric
Family	Modicon Series
Program Memory	16k words
Communication Port	1 x RS-232
Power Supply	Integrated
Mounting Type	DIN rail
Dimensions (W x H)	Approx. 130 x 100 mm
Approx. Weight	0.65 kg
Energy Storage	Battery-backed RAM
Backup Duration	Up to 6 months
Component Count	Single integrated unit

Installation and Programming Notes

This CPU connects directly to a programming terminal via the serial port. You must use a null modem cable for proper communication. The ALU 154 accepts standard Modicon ladder logic instructions. Therefore, existing programs transfer easily without modification. Always replace the backup battery every two years. A depleted battery will cause complete memory loss during a power outage.