Siemens 6ES5375-0LC31 Simatic PLC Module Card

Siemens 6ES5375-0LC31 is a SIMATIC S5 memory submodule offering 8 KB of EEPROM storage, a spare part designed for the 375 memory family used by legacy SIMATIC S5 controllers. The nonvolatile EEPROM preserves program and data blocks across power cycles, making it suitable for backing up calibration values, configuration data, and runtime parameters in aging automation lines. This memory module is intended to be installed as part of the SIMATIC S5 375-series memory subsystem, providing either memory extension or replacement for existing modules in compatible CPU/memory architectures. Typical use cases include maintenance or retrofitting of older production lines that rely on the S5 platform, where reliable, nonvolatile memory is required to retain critical control data between resets. The 6ES5375-0LC31 designation identifies an 8 KB EEPROM memory module within Siemens’ SIMATIC S5 family, ensuring engineers and technicians can source a compatible spare part when updating or repairing memory capacity in S5 PLC configurations.