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Reset to factory settings - remove password

Created by: mikcomi at: 2/14/2016 9:39 PM (14 Replies)

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4/3/2018 3:08 PM	Rate (0)
Hati Platinum Member Joined: 9/21/2012 Last visit: 3/9/2021 Posts: 2551 Rating: (290)	Masoodes mikcomi Hi, i have successfully erase CPU memory and remove password. The steps are: 1. Create empty transfer card (24MB MMC) 2. Turno on CPU power supply 3. Insert MMC card 4. Wait until third LED from RUN starts blinking 5. Turn off and turn on power supply That's it. Best regards Hi Should I use a 24MB MMC only? Not done with 4MB? The size shouldn't matter for this operation.

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4/21/2019 12:13 PM	Rate (0)
Esi_Sol Member Joined: 12/8/2016 Last visit: 4/1/2020 Posts: 2 Rating: (0)	Thanks, I did it. The password is removed easily.

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12/26/2019 5:06 AM
vicky bhau Experienced Member Joined: 8/27/2018 Last visit: 3/8/2021 Posts: 105 Rating: (0)	I Have Done it with 4 MB mmc.Do Not Bother About mmc Size.

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1/27/2020 9:53 AM	Rate (0)
slimchance037 Regular Member Joined: 6/3/2018 Last visit: 3/4/2021 Posts: 5 Rating: (0)	Hi, Will it have the same firmware after that? Thanks

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11/7/2020 5:59 PM	Rate (0)
Aslaan Advanced Member Joined: 7/11/2009 Last visit: 2/22/2021 Posts: 37 Rating: (0)	If you have lost the password for a password-protected CPU, use an empty transfer MCard to delete the password-protected program. Use one of Memory cards below 6ES7954-8LC02-0AA0(4 MB) 6ES7954-8LE02-0AA0(12 MB) 6ES7954-8LF02-0AA0(24 MB) 6ES7954-8LL02-0AA0(256 MB) *6ES7954-8LP01-0AA0(32 GB) After you receive new Mcard turn-off CPU, extract old Mcard and insert new Mcard in card slot, turn-on CPU and wait till Mcard will move all program data from cpu. For erasing the old Mcard you have to insert on a laptop. Delete all files on it, except of the two hidden marked system files "__LOG__" and "crdinfo.bin" . Remove this card from your laptop and insert it again in your s7-1200 cpu. Power-on and download your new program again in cpu s7-1200. Do not upload a password-protected program with an empty password! Other way is to Reset the CPU to factory defaults without a plugged MCard in CPU. Select Accessible devices >> Select PLC>> Online Diagonostic>> Functions> Reset to Factory Settings but not work to all CPU(depend on firmware). good luck! Remember!!!! Once you did this operation the old program from CPU is lost. You can now reload other program with known password or without.

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