Description

The Siemens 6ES5370-0AA41 is a plug-in EPROM memory submodule designed for the Simatic S5 programmable logic controller (PLC) architecture. This non-volatile storage module is used to house compiled STEP 5 user programs, including organization blocks, function blocks, and statement lists. By storing control logic independently of the CPU backplane battery, the module ensures program integrity during power outages, reducing recovery time and preventing data loss in critical industrial environments such as manufacturing lines and power generation facilities.

Features

• Non-volatile 8 KB EPROM memory storage.
• UV-erasable design for reusable program cycles.
• Direct interface with Simatic S5 CPU front-loading slots.
• Robust plastic housing for protection against electrostatic discharge and EMI.
• Low power consumption, drawing directly from the host CPU backplane.

Applications

This submodule is essential for Simatic S5 PLC systems where long-term program retention is required without reliance on volatile RAM or battery-backed memory. It is commonly deployed in automated manufacturing, chemical processing, and infrastructure control systems where rapid system recovery after power loss is critical.

Technical Specifications

Installation Guidelines

• Power Isolation: Always de-energize the Simatic S5 rack before inserting or removing the memory submodule to prevent bus noise or potential damage to the CPU backplane.
• Seating: Ensure the module edge connector is properly aligned with the CPU receptacle guides. Press firmly until the housing is flush with the CPU faceplate to ensure reliable contact under vibration.
• UV Protection: Keep the EPROM chip window covered after programming. Exposure to ambient light or UV sources can cause data degradation and bit-flipping over time.
• Programming: Use compatible Simatic S5 PG-series programmers for writing data to the module.

FAQ

How do I erase the 6ES5370-0AA41?

The module is an EPROM type, which requires exposure to a high-intensity ultraviolet (UV) light source through the integrated window to clear the existing program data before it can be reprogrammed.

Is this module compatible with all S5 CPUs?

This module is designed for specific Simatic S5 CPU models that support the standard EPROM submodule interface. Please verify your CPU hardware manual for specific memory submodule compatibility.