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CPU 319-3 PN/DP - Random lost of data

3/6/2020 3:59 PM	Rate (0)
fsgonzaga Bronze Member Joined: 8/3/2017 Last visit: 11/28/2025 Posts: 142 Rating: (0)	Good morning u all, I have noticed that my s7-300 CPU has lost random data when turning it off, despite having a memory card. Anyone have seen something like that? Any tips to solve my problem?

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3/6/2020 4:35 PM	Rate (0)
Hati Platinum Member Joined: 9/21/2012 Last visit: 12/27/2025 Posts: 4829 Rating: (512)	fsgonzaga Good morning u all, I have noticed that my s7-300 CPU has lost random data when turning it off, despite having a memory card. Anyone have seen something like that? Any tips to solve my problem? And is that data on retentive memory area or not?

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3/6/2020 5:15 PM	Rate (0)
fsgonzaga Bronze Member Joined: 8/3/2017 Last visit: 11/28/2025 Posts: 142 Rating: (0)	Hello Hati, Yes, all data in retentive memory...

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4/14/2020 10:58 AM	Rate (0)
collinsd70 Advanced Member Joined: 12/23/2016 Last visit: 11/3/2025 Posts: 85 Rating: (5)	fsgonzaga Hello Hati, Yes, all data in retentive memory... Do you lose the same data on a soft reset only? (RUN --> MRES --> RUN) If your data is being retained- maybe there is something overwriting? (initial value or call in OB100?)
	Regards Daniel.
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4/16/2020 3:59 PM	Rate (0)
xMartin Advanced Member Joined: 7/3/2014 Last visit: 11/14/2025 Posts: 18 Rating: (0)	In which memory area you are having these problems? Is it a bit memory or a DB?

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