MeloAuto-Trusted PLC & DCS Parts Supplier
Flexible Program Storage Expansion for SIMATIC S5 Controllers
The Siemens 6ES5350-5AA21 memory module provides additional program storage capacity for S5-100U and S5-95U programmable controllers. This plug-in module stores user programs securely for applications exceeding the CPU’s internal memory capacity. It ensures reliable program retention even during extended power outages.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Model | 6ES5350-5AA21 |
| Series | SIMATIC S5 |
| Product Type | Memory Module (EEPROM) |
| Memory Type | EEPROM (Electrically Erasable Programmable Read-Only Memory) |
| Memory Capacity | 8 KB (approx. 4,000 program statements) |
| Data Retention | Non-volatile (no battery required) |
| Write Cycles | > 10,000 |
| Access Time | 100 ns (typical) |
| Power Supply | 5V DC via backplane or programmer |
| Operating Temperature | 0°C to 60°C |
| Weight | 0.05 kg |
| Dimensions (W x H x D) | 25 x 55 x 10 mm |
| Protection Rating | IP20 |
Non-Volatile Memory Architecture
The Siemens 6ES5350-5AA21 uses EEPROM technology to retain user programs without battery backup. This feature eliminates the risk of program loss due to battery failure or power interruptions. The module stores up to 8 KB of program code, accommodating approximately 4,000 statements.
Flexible Usage and Application
Engineers can program the memory module either online via the controller or offline using a programming device. The EEPROM supports over 10,000 write cycles for multiple program revisions during development. This durability suits applications requiring frequent software updates or different production setups.
Integration and Installation
The module plugs directly into dedicated memory slots on S5-100U CPUs or S5-95U base units. It works seamlessly with existing processor firmware without additional configuration. The compact dimensions and light weight facilitate straightforward insertion and removal.
Application Scenarios
This memory module suits applications with complex logic exceeding internal CPU memory limits. It also enables rapid program exchange for machine changeovers between different product types. The non-volatile storage ensures reliable startup after power cycling in any industrial environment.