Siemens 6ES5370-0AA41 SIMATIC S5 370 8 KB EPROM Memory Submodule

Features

-8 KB EPROM capacity
-Storage for 4K instructions
-Four 2716 EPROM devices
-Non-volatile program retention
-77 × 110 mm submodule format
-Compatible with the S5 350 memory architecture
-Offline EPROM programming
-Hardware-defined memory addressing

Product Overview

The Siemens 6ES5370-0AA41 is a SIMATIC S5 Series 370 EPROM memory submodule for fixed user-program storage. It provides a capacity of 4K instructions, equivalent to 8 KB, and is documented with four 2716 EPROM devices. The submodule is used with compatible SIMATIC S5 memory hardware, including the 350 memory board. Unlike the battery-backed RAM on the 350 board, the 6ES5370-0AA41 retains its programmed contents without a backup supply. The EPROM must be programmed with compatible Siemens programming equipment before it is placed into service.

Technical Specifications

Benefits

-Retains program data without battery backup
-Protects fixed program content from unintended online changes
-Supports established SIMATIC S5 memory configurations
-Allows programmed submodules to be transferred between compatible systems
-Separates fixed EPROM storage from writable RAM
-Fits the documented 350 memory-board positions

Application Areas
Fixed Program Storage--The 6ES5370-0AA41 can store a completed S5 user program that should remain unchanged during normal controller operation. Its EPROM technology retains the programmed information after system power is removed.

SIMATIC S5-130A/K Systems--Siemens documentation identifies the 370 submodule for S5-130A/K applications. In the documented central-unit arrangement, the address setting requirements may differ from configurations using a separate 350 memory board.

Program Distribution and Machine Configuration--A programmed EPROM submodule provides a physical method of retaining and transferring an approved machine program. The receiving controller, memory board and address settings must match the original system configuration.

Frequently Asked Questions

1. Is the 6ES5370-0AA41 a complete memory board?
No. It is an EPROM memory submodule. In a typical configuration, it is inserted into a compatible SIMATIC S5 350 memory board. The carrier board and any second memory submodule are separate components unless specifically included in the order.

2. What is the actual capacity of the 6ES5370-0AA41?
Its capacity is 4K instructions, corresponding to 8 KB. The instruction capacity and byte capacity are two descriptions of the same storage space and should not be added together.

3. Does the EPROM require a backup battery to retain its program?
No. EPROM is non-volatile and retains its programmed contents without a backup supply. However, the onboard CMOS RAM of a 350 carrier board still depends on the controller’s backup-battery circuit.