Application Scenarios
Picture a water pumping station operating in a remote, unattended location. The S5-95U PLC controls critical pump sequencing and pressure regulation. One day, a lightning strike causes a power surge that corrupts the CPU’s RAM, wiping out the control program. The station goes offline, and without immediate intervention, the municipal water supply is threatened. If the original program was stored on a Siemens 6ES5375-0LA15, the maintenance team can simply insert the module into the CPU’s memory slot, perform a cold restart, and restore full operation within minutes—no programming device, no laptop, and no STEP 5 software required at the site.
In a typical factory environment, the Siemens 6ES5375-0LA15 addresses a fundamental pain point: the vulnerability of battery-backed RAM to “sudden death.” Traditional RAM submodules rely on lithium batteries with a lifespan of 3-5 years. When these batteries expire unnoticed, the program vanishes, and the production line grinds to a halt . The Siemens 6ES5375-0LA15 eliminates this risk entirely, providing true “fire-and-forget” program storage.
Parameters
| Main Parameters | Value / Description |
|---|---|
| Product Model | Siemens 6ES5375-0LA15 (also 6ES5 375-0LA15, MS375) |
| Manufacturer | Siemens AG |
| Product Category | Memory Submodule – EPROM for SIMATIC S5 |
| Storage Capacity | 8 KB (8K x 8 bit) – sufficient for small to medium S5 programs |
| Memory Type | EPROM (Erasable Programmable Read-Only Memory) |
| Data Retention | Permanent / Indefinite – no battery required |
| Erase Method | Ultraviolet (UV) light – 253.7nm wavelength, approx. 20-30 minutes exposure |
| Programming Mode | BYTE mode only – does NOT support WORD mode |
| Compatible CPUs | SIMATIC S5-95U, S5-100U, S5-115U (with memory submodule slot) |
| Programming Device | Siemens PG (Programming Device) with STEP 5 or compatible EPROM programmer |
| Operating Temperature | 0°C to +60°C (or -25°C to +60°C per sources) |
| Storage Temperature | –40°C to +85°C |
| Dimensions | Approx. 9.0 x 2.0 x 6.0 cm |
| Weight | Approx. 0.04 kg |
| Product Status | Discontinued (since October 2006) |
