Description

The Siemens 6ES5374-0AA11 is a non-volatile EPROM memory submodule designed for the Simatic S5 programmable logic controller (PLC) family. This module provides reliable, permanent storage for user programs and configuration data, ensuring that critical automation sequences remain intact even in the event of total power loss or battery failure. It is a critical component for maintaining system availability in legacy industrial control environments.

Features

• Non-volatile EPROM technology ensures long-term data integrity without requiring battery backup.
• Designed for direct integration into the Simatic S5 CPU module slots.
• High-speed read access optimized for S5 processor cycle times.
• Robust mechanical design to prevent misalignment and pin damage during installation.
• Electromagnetic shielding to protect data integrity in high-noise industrial environments.

Applications

This memory module is widely used in legacy automation systems across various sectors, including power generation, water treatment, material handling, and heavy manufacturing. It is primarily utilized to store stable, production-ready control logic that must be protected against accidental erasure or memory corruption.

Technical Specifications

Installation Guidelines

• Ensure the PLC power is switched off before inserting or removing the memory module to prevent electrical surges or data corruption.
• Handle the module by the edges to avoid electrostatic discharge (ESD) damage to the internal components.
• Align the module carefully with the CPU slot guide rails; do not force the module if resistance is felt.
• Verify that the module is fully seated to ensure proper electrical contact with the backplane.
• Store in a cool, dry environment when not in use to maintain long-term data stability.

FAQ

Is this module erasable? Yes, as an EPROM, it can be erased using ultraviolet light exposure through the quartz window, allowing for reprogramming if necessary.

Does this module require a battery? No, this is a non-volatile EPROM module and does not require a battery to retain its programmed data.