External Program and Data Storage for SIMATIC S5 Systems
The Siemens 6ES5581-0LA11 mass storage module provides external memory capacity for S5-115U and S5-135U programmable controllers. This module stores user programs, system parameters, and recipe data on removable media. It supports program backup and restoration without requiring a programming device.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Model | 6ES5581-0LA11 |
| Series | SIMATIC S5 |
| Product Type | Mass Storage Module |
| Storage Medium | Removable memory cartridge (EPROM/EEPROM) |
| Storage Capacity | Up to 128 KB (depending on cartridge type) |
| Data Transfer Rate | Approx. 1 KB/s |
| Backup Support | Full program and data backup/restore |
| Operation Modes | Backup, restore, verify, delete |
| Status Indicators | LED for operation status and error indication |
| Power Supply | 5V DC via backplane bus |
| Current Consumption | 5V DC / 400mA (max) |
| Weight | 0.5 kg |
| Dimensions (W x H x D) | 25 x 120 x 116.4 mm |
| Operating Temperature | 0°C to 60°C |
| Protection Rating | IP20 |
Convenient Data Backup and Restoration
The Siemens 6ES5581-0LA11 enables quick backup of the CPU’s program and data memory to removable cartridges. Engineers can restore these backups directly to the CPU without external programming equipment. This feature reduces downtime significantly during maintenance and software updates.
Multiple Operation Modes
The module provides backup, restore, verify, and delete functions for flexible data management. Users can verify the stored data against the CPU memory to ensure integrity. These operations simplify version control and program exchange across multiple machines.
Application Scenarios
This mass storage module suits applications requiring frequent program changes, such as batch processing and production changeovers. It also supports maintenance operations by storing backup copies of proven programs. The removable media approach enables fast machine conversion between different product types.
Integration and Operation
A single pushbutton initiates backup or restore operations without complex programming. The LED status indicator shows successful completion or alerts to errors. This straightforward operation makes the module accessible to maintenance personnel without specialized training.
MeloAuto-Trusted PLC & DCS Parts Supplier


