Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 6ES5375-0LC61 |
| Manufacturer | Siemens |
| Product Type | EEPROM Memory Submodule |
| Series | SIMATIC S5 / 375 Series |
| Compatible Systems | S5-115U, S5-135U, S5-155U |
| Memory Capacity | 32 KB (EEPROM) |
| Data Retention | Non-volatile, no battery required |
| Erase/Write Cycles | 10,000 – 100,000 (typical) |
| Write Voltage | Standard 5 V DC (no external programming voltage required) |
| Power Supply | DC 5 V from backplane bus |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -40°C to +70°C |
| Protection Class | IP20 |
| Physical Form Factor | Submodule for CPU backplane slot |
| Weight | Approx. 0.05 kg |
Main Features and Advantages
Non-Volatile Storage Without Battery Dependency
The SIEMENS 6ES5375-0LC61 eliminates the risk of program loss associated with battery-backed RAM modules. Its EEPROM technology retains data permanently without requiring a backup battery, ensuring that the control program remains available even after years of power-down . This feature is particularly valuable in facilities where scheduled maintenance or unexpected outages could otherwise compromise system integrity.
Electrical In-Circuit Reprogramming
Unlike EPROM modules that must be removed and exposed to ultraviolet light for erasure, the SIEMENS 6ES5375-0LC61 supports electrical erasing and rewriting directly within the system . This capability significantly simplifies program updates and version management, allowing engineers to modify control logic without physically handling the hardware. The module supports approximately 10,000 to 100,000 write cycles, providing ample endurance for routine program maintenance .
Compatibility and Integration
The SIEMENS 6ES5375-0LC61 is designed for seamless integration with S5-115U, S5-135U, and S5-155U CPU families . It is configured and programmed using the standard STEP 5 development environment, maintaining consistency with existing workflows. The module’s compact form factor fits the CPU’s dedicated memory slot, requiring no additional rack space or cabling.
Long-Term Data Integrity
With a typical data retention period exceeding 10 years, the SIEMENS 6ES5375-0LC61 provides reliable long-term storage for critical control programs . This durability makes it an ideal solution for applications where program history and version consistency are important for regulatory compliance or operational continuity.
