Siemens 6ES5375-0LC61 Programmable Logic Controller Module

Siemens 6ES5375-0LC61 is a SIMATIC S5 memory submodule that provides 32 KB of non-volatile EEPROM storage for legacy PLC configurations. This EPROM-based module is documented as a 32 KB memory submodule used with SIMATIC S5 systems, including the 375 memory configuration family, and is commonly referenced in catalogs and repair listings as a spare part for S5 controllers. The 32 KB EEPROM preserves program blocks, data blocks, and configuration information between power cycles, making it a key component when upgrading, repairing, or refurbishing aging S5 installations. As part of the SIMATIC S5 ecosystem, the 6ES5375-0LC61 is described for memory architectures that rely on EEPROM-based storage and is marketed by multiple suppliers as the 32 KB EEPROM memory submodule for the S5 375 series. While primarily serving as archival storage of control logic and configuration data, it participates in the broader S5 memory topology by replacing or augmenting existing memory submodules in compatible CPUs. For technicians maintaining older Siemens control networks, this part provides a legitimate memory-submodule replacement option that adheres to the original S5 hardware design and supports continued operation of legacy processes.