SIEMENS 6ES5 375-0LC31

Siemens SIMATIC S5 8KB EEPROM Memory Module

Description

This is a genuine Siemens memory submodule, part number 6ES5 375-0LC31, for the SIMATIC S5 series of programmable logic controllers. It provides 8 Kilobytes of EEPROM memory, allowing for non-volatile storage of your automation program and data. This module is essential for the reliable operation of legacy systems, ensuring that critical information is retained even during power cycles.

Specifications

• Manufacturer: Siemens
• Product Family: SIMATIC S5
• Product Type: Memory Submodule
• Memory Type: EEPROM
• Memory Capacity: 8 Kbytes (8K x 8 Bit)
• Compatibility: Designed for S5-115U/H/F, S5-135U, S5-155U/H CPUs

Label Info

• Part Number: 6ES5 375-0LC31
• Main Chip: XICOR X2864AP

Application

Ideal for replacing failed memory modules or for upgrading the program memory capacity in existing SIMATIC S5 installations. It is a critical spare part for industries relying on S5-based control systems for their manufacturing and process automation.

Country of Origin

Made in Germany.

CO2 Impact

Reusing this component saves an estimated 2.0 kg of CO2 compared to producing a new one. This choice supports sustainable industrial maintenance and contributes to a circular economy.

Availability

This is an obsolete item with limited stock. Availability is not guaranteed once current inventory is depleted. Order now from spareparts2day for expert support and fast delivery.

FAQ

Is this EEPROM module plug-and-play, or does it require programming before use?

This module can be used as a blank slate for your own program or can be used to load an existing program. It must be programmed using a Siemens PG (Programming Device) with STEP 5 software. It is not pre-programmed.

What is the data retention period for this EEPROM submodule without power?

EEPROM technology provides excellent data retention, typically rated for over 10 years without power, ensuring your PLC program and data are safe during long shutdowns or storage.

Can this 8KB module be used in a slot that previously held a 2KB or 4KB EPROM/EEPROM module?

Yes, in most compatible SIMATIC S5 CPUs, you can use a larger memory submodule like this 8KB version to replace a smaller one. This allows for program expansion. However, always consult the specific CPU’s technical manual to confirm maximum supported memory size.

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Last Update: Friday, March 13, 2026