What's the difference between Siemens S7-400 "RAM" and "SRAM" cards

I have some S7-400 memory cards: some are RAM and some are flash. However, some of the RAM cards are marked "RAM" and some are marked "SRAM", although they have the same part numbers. I've searched various sections of Siemens's website and it isn't at all enlightening.

Does anyone know if there is any difference between these cards?

siemens step-7

asked Jun 11 '10 at 16:03

Allan Lewis
46●1

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