Siemens SIMATIC S5 EEPROM Memory Submodule

Description

This is a 6ES5377-0AB31 memory submodule for the Siemens SIMATIC S5 family of programmable logic controllers. It is an EEPROM module with a 2 Kbyte capacity, providing non-volatile storage for user programs. This allows data and logic to be retained even after a power loss, without the need for a backup battery. This component is essential for the maintenance and repair of legacy automation systems still in operation worldwide.

Specifications

• Manufacturer: Siemens
• Product Series: SIMATIC S5
• Type: Memory Submodule (EEPROM)
• Model Number: 6ES5377-0AB31
• Memory Capacity: 2 Kbytes
• Compatibility: Suitable for S5-90U/-95U/-100U, S5-115U/-135U/-155U PLC systems
• Technology: Electrically Erasable Programmable Read-Only Memory

Label Info

• Brand: Siemens
• Part Number: 1P 6ES5377-0AB31
• E-Stand (Version): 06

Application

The 6ES5377-0AB31 is used to store the control program in various SIMATIC S5 CPUs. Its EEPROM technology allows for easier program changes compared to older EPROM versions, making it ideal for applications in manufacturing, process control, and building automation where the S5 platform is still in use.

Country of Origin

This product is manufactured in Germany.

CO2 Impact

Opting for this reconditioned memory module prevents the emission of approximately 3.0 kg of CO2 compared to producing a new one. This saving is equivalent to driving a standard car for 15 kilometers.

Availability

This product is an obsolete legacy component. Availability is limited to existing stock. Order now from PLC2Day for expert support and fast delivery.

FAQ

EPROM (Erasable Programmable Read-Only Memory) modules require a separate UV light eraser to clear the data before reprogramming. EEPROM (Electrically Erasable Programmable Read-Only Memory) modules like this 6ES5377-0AB31 can be erased and reprogrammed electrically, directly within the CPU or with a Siemens programmer, making them more convenient for development and updates.

No, this module is specifically designed for certain SIMATIC S5 CPUs, including the S5-90U, S5-95U, S5-100U, S5-115U, S5-135U, and S5-155U series. Always verify compatibility with your specific CPU model's technical documentation before installation.

No, one of the key advantages of EEPROM technology is that it is non-volatile. The 6ES5377-0AB31 retains its stored program and data even when the PLC is powered off, without the need for a backup battery.

PLC2DAY is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners.

Current Date: Friday, March 13, 2026