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How is the program backed up in a BMXP342020 and other M340 CPUs?

The M340 CPUs use a flash backed RAM. The program is stored in an SD Card and is read off the card. There is no battery in these processors.

Legacy KB System (APS) Data: RESL212647 V1.0, Originally authored by TVe on 10/02/2013, Last Edited by TVe on 10/02/2013
Related ranges: Modicon M340
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