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The Siemens 6ES5375-1LA41 is a high-reliability CMOS EPROM memory submodule designed for the Simatic S5 programmable logic controller series. This non-volatile storage component provides a 32 KB capacity, ensuring that critical control programs, configuration blocks, and system parameters are retained securely without the need for battery backup. It is an essential component for industrial automation environments where rapid cold-start recovery and protection against power loss are required to maintain operational uptime.
This memory submodule is widely used in legacy automation systems, including power generation, oil and gas refining, and heavy manufacturing, where Simatic S5 controllers manage critical process logic.
| Model | 6ES5375-1LA41 |
| Brand | Siemens |
| Product Family | Simatic S5 |
| Memory Type | CMOS EPROM |
| Capacity | 32 KB (32 K x 8 Bit) |
| Operating Temperature | 0 to 60 deg C |
| Storage Temperature | -40 to 70 deg C |
No, the 6ES5375-1LA41 uses EPROM technology, which is non-volatile and does not require battery backing to retain stored data.
No, this is an EPROM module. Data must be written using a dedicated Siemens programming device before the module is inserted into the PLC.