Siemens 6ES5910-0AA31 Memory Submodule

The Siemens 6ES5910-0AA31 memory submodule provides program storage for SIMATIC S5 CPUs. This submodule retains user logic and system parameters during power loss. It plugs directly into the memory slot of S5-100U and S5-115U processors. You can use this submodule as a direct replacement for older EPROM units.

Detailed Technical Specifications

The Siemens 6ES5910-0AA31 memory submodule measures 85 mm in length. Its width reaches 55 mm across the main body. The total height goes up to 12 mm including the connector pins. This unit weighs approximately 0.05 kilograms for easy handling.

Key hardware parameters include:

Complete Model: Siemens 6ES5910-0AA31
Memory type: EEPROM (electrically erasable)
Memory capacity: 32 KB (256 Kbits)
Data retention: 10 years minimum
Write cycles: 10,000 erase/write operations
Access time: 150 ns typical
Connector: 28-pin dual in-line socket
Component count: 4 integrated circuit chips
Energy storage: No capacitors required
Battery backup: Not necessary for data retention
Operating voltage: 5 V DC from CPU backplane

The Siemens 6ES5910-0AA31 memory submodule stores no electrical charge after removal. Therefore, technicians can handle the unit without any safety delay. The EEPROM technology allows field reprogramming without UV erasers. Moreover, this submodule retains data indefinitely without a backup battery.

Technical Parameter	Specification
Full Model Number	Siemens 6ES5910-0AA31
Dimensions (LxWxH)	85 mm x 55 mm x 12 mm
Weight	0.05 kg
Memory Type	EEPROM
Memory Capacity	32 KB (256 Kbits)
Data Retention	10 years minimum
Write Cycles	10,000 operations
Access Time	150 ns
Connector Type	28-pin DIL socket
IC Component Count	4 chips
Energy Storage	None required
Operating Voltage	5 V DC
Operating Temperature	0°C to +60°C
Humidity Tolerance	5% to 85% non-condensing

Application and Installation

The Siemens 6ES5910-0AA31 memory submodule inserts into the CPU’s memory daughterboard slot. It requires correct orientation of the notch indicator for proper insertion. This submodule stores the complete user program including all logic blocks. Consequently, you can change programs by swapping submodules instead of rewriting memory.

Programming and Reliability

This submodule accepts program downloads directly from a PG 600 series programmer. The Siemens 6ES5910-0AA31 comes pre-programmed or blank for user configuration. You can erase and rewrite this submodule up to 10,000 times. Therefore, it serves well for both production and development environments.

Always power down the CPU before inserting or removing this submodule. Align the notch on the submodule with the socket indicator. The unit features a plastic label area for program identification. Furthermore, its molded housing protects against dust and static discharge.