6ES7953-8LL31-0AA0

Technical specifications

Manufacturer

Siemens

Manufacturer part no.

6ES7953-8LL31-0AA0

Type

Memory card

Application

Program memory for S7-300 CPUs

Used with

S7-300, C7 and ET 200 CPUs with an MMC slot

Product type designation

Micro Memory Card

Storage / Type of memory

Flash-EPROM

Storage / Memory size

2 Mbyte

Storage / Number of write/delete operations, min.

100 000

Storage / Data retention (after final programming action), min.

10 a

Width

24 mm

Height

32 mm

Depth

1.4 mm

Weight, approx.

2 g

Technical documents (1)

• Siemens data sheet 6ES7953-8LL31-0AA0

Key features

• 2 MB flash load memory
• At least 100,000 write/delete operations
• Data retained at least 10 years after the last programming
• For S7-300, C7 and ET 200 CPUs
• Siemens has announced its phase-out

About the Siemens 6ES7953-8LL31-0AA0

The Siemens 6ES7953-8LL31-0AA0 is the 2 MB Micro Memory Card (MMC), the load memory that S7-300 CPUs with MMC slots need to run. Siemens's data sheet gives flash memory, at least 100,000 write/delete operations and data retention of at least 10 years after the last programming. SiePortal lists it as phase-out announced.

What is the 6ES7953-8LL31-0AA0 used for?

It holds the CPU's program and configuration for larger projects: an S7-300 CPU such as the 315-2 or 317-2 does not run without one. A failed or lost card stops the CPU.

Lifecycle and successor

Phase-out announced (Siemens SiePortal).

Before you order

What to photograph or confirm so the right unit is quoted.

Check the order number and size printed on the card; the program in the project must fit. A new card is blank: it has to be loaded with the program from the STEP 7 project.