Siemens 6ES5376-1AA31 Memory Submodule

Product Overview

The Siemens 6ES5376-1AA31 memory submodule provides 16 KB of RAM storage for SIMATIC S5 programmable controllers. This module serves as an additional memory expansion for CPUs that require extra program or data capacity. It comes as a compact plug-in unit weighing approximately 0.15 kg. The submodule stores user programs, data blocks, and system parameters securely during operation.

Technical Specifications

Parameter	Specification
Model Number	6ES5376-1AA31
Product Type	Memory Submodule
Brand	Siemens
Category	PLC Memory Modules
Memory Capacity	16 KB RAM
Compatibility	SIMATIC S5 Series PLCs
Weight	Approximately 0.15 kg
Form Factor	Compact plug-in module
Function	Program and data storage
Data Retention	Requires backup battery

Key Features and Benefits

Expanded Memory Capacity
The 6ES5376-1AA31 adds valuable storage for complex control programs and data blocks. Users can implement more sophisticated automation logic with this additional memory. It supports larger projects that exceed the base CPU memory capacity.

Plug-and-Play Installation
This memory submodule features a simple plug-in design for straightforward installation. Technicians can insert or remove the module without special tools. This design minimizes system downtime during memory upgrades or replacements.

Reliable Program Storage
The submodule securely holds the user program and critical data during normal operation. It requires a backup battery to maintain data when the system powers down. Users should verify battery status periodically to prevent data loss.

Application and Use Cases

The Siemens 6ES5376-1AA31 suits applications requiring more memory than the standard CPU provides. Common uses include complex sequence control, data logging, and recipe management. Facilities operating legacy S5 systems will find this module essential for maintaining existing applications. It also serves as a useful spare part for emergency replacements.