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CPU TSX57103M, TSX57202 lost application program
we have problem of Schneider CPU TSX57103M, TSX57202. They lost application program without obvious reason

we have problem of Schneider CPU TSX57103M, TSX57202.
they lost application program without obvious reason. we have about 15 CPU has the same problem. some Of them lost application by reset from CPU Reset Button, some of them by reset power while battery in Power Supply module, others by long time of continuous operation while power remains steady.

so question
there is life time for this type of processors?
or Is this normal?