6ES7953-8LG20-0AA0 Overview

The Siemens 6ES7953-8LG20-0AA0 Micro Memory Card - 128 KB is a 128 KB Micro Memory Card for S7-300, C7, and ET 200 systems. Operating at 3.3V, it provides reliable, long-term storage for PLC programs and data. This spare part, with a minimum data retention of 10 years, is essential for maintenance and backup in industrial automation.

Application

Core Function: Used as a program and data storage module for Siemens S7 programmable logic controllers.

Target System: Specifically designed for the S7-300 PLC series, C7 controller, and ET 200 distributed I/O stations.

Primary Use: Stores and loads the user control program, essential for system startup and operation.

Backup Role: Serves as a critical spare part for maintenance, allowing program backup and hardware replacement.

Configuration Storage: Holds device configuration parameters and non-volatile project data.

Durability: Its high endurance (100,000 write/delete cycles) and long data retention (10 years) suit demanding industrial environments.

FAQ

Q1: What is the function of the Siemens 6ES7953-8LG20-0AA0?

A1: It is a 128 KB Micro Memory Card used for storing and loading the user program and data in Siemens S7-300, C7, and ET 200 PLC systems.

Q2: What is its operating voltage and memory size?

A2: It operates at 3.3V DC and provides 128 kilobytes (KB) of NAND flash memory storage.

Q3: What is the lifecycle status of this memory card?

A3: This product has reached the end of its production lifecycle and is now sold as a dedicated spare part for maintenance and replacement.

Q4: How reliable is this card for long-term industrial use?

A4: It is highly reliable, supporting a minimum of 100,000 write/delete cycles and guaranteeing data retention for at least 10 years.

Q5: What is its physical size and typical application?

A5: The card is compact and lightweight (approx. 10.6 x 9.3 x 0.5 cm, 0.033 kg) and is essential for backing up and restoring PLC programs in an automation system.