Siemens 6ES5377-0BA31: High-Capacity Memory Expansion for SIMATIC S5

This memory submodule delivers substantial storage capacity for SIMATIC S5 programmable logic controllers. It allows engineers to implement complex control programs with ample space for system parameters. The unit integrates seamlessly into existing CPU architectures, extending the capabilities of legacy automation equipment.

Technical Specifications and Physical Attributes

The Siemens 6ES5377-0BA31 operates as a CMOS RAM submodule with integrated battery backup circuitry. It stores up to 32 kilobytes of user data and system configuration information. Its compact housing measures approximately 50 millimeters in height and 45 millimeters in depth. The component weighs roughly 78 grams, placing minimal additional mass within the controller assembly.

Installation and System Compatibility

The submodule fits directly into the designated memory slot on compatible S5 processor units. Technicians can complete the installation swiftly, requiring no special tools or complex procedures. This component cooperates seamlessly with existing S5 modules, preserving system stability during operation. Many industrial facilities utilize such memory expansions to extend the service life of their control systems.

Energy Storage and Data Integrity

An onboard lithium battery maintains stored data integrity when the main system loses power. This energy storage feature protects critical programs and ensures rapid recovery after power interruptions. The module draws minimal current during standard operation, reducing overall system power consumption. Such reliability makes it an excellent choice for facilities requiring uninterrupted automation performance.