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how to modify with 315plc but it's write protected bypassword?how i can delete this password?

Created by: mokhakram at: 8/5/2014 12:56 PM (11 Replies)

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8/5/2014 12:56 PM	Rate (0)
mokhakram Posts: 21 Rating: (0)
mokhakram Posts: 21 Rating: (0)
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8/5/2014 1:31 PM	Rate (0)
Marcjan Diamond Member Joined: 4/22/2010 Last visit: 3/31/2025 Posts: 5697 Rating: (716)	Hello, Is it only write protected or both writing and reading? Do you have the original project? Regards, Marcjan
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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8/6/2014 10:44 AM	Rate (0)
Ayman Elotaify Diamond Expert Joined: 5/28/2008 Last visit: 12/23/2025 Posts: 4522 Rating: (843)	mokhakram please , i need to delete unknown password from my cpu 315 Hello, There is no legal way to delete password. You should have the password to delete it by redownloading the HW configuration once again after deactivating password. You have to ask the prgrammer for the password. If the case is you need to use the same CPU in other application, then buy a new memory card and write your new program and then you will be free to put a password or not. Hope this helps.
	Ayman Elotaify
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8/6/2014 10:47 AM	Rate (0)
miami Platinum Member Joined: 8/31/2005 Last visit: 12/16/2025 Posts: 2198 Rating: (331)	Download a new programm. If you have used Safety you must reset the MMC in STEP 7, in a programming slot of a PG or with the USB-Prommer. In any cases you will lose the actual on the MMC stored program.

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8/6/2014 12:48 PM	Rate (0)
olloy Posts: 417 Rating: (37)	mokhakram please , i need to delete unknown password from my cpu 315 Hi! Do not post same question three times. As mentioned by colleagues, there is no way to remove the password by Siemens software. //Actually Siemens have simple challenge-responce protocol for authorisation, but in most countries it is completely illegal to sniff and/or crack the password. Ask programmer to provide you the password (basically password is created for prevention of unauthorised access).
olloy Posts: 417 Rating: (37)
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8/6/2014 1:02 PM	Rate (0)
mokhakram Posts: 21 Rating: (0)	it's write protected reading and writng and i have the source of the program but i need to modify on it and download it again
mokhakram Posts: 21 Rating: (0)
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8/6/2014 1:04 PM	Rate (0)
Marcjan Diamond Member Joined: 4/22/2010 Last visit: 3/31/2025 Posts: 5697 Rating: (716)	Hello, You can "format" MMC only with a PG (with correct socket) or external USB card reader(Simatic) Do not try to format it in windows, that will make the card useless. Regards, Marcjan
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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8/6/2014 2:17 PM	Rate (0)
sunworldst Posts: 1 Rating: (0)	can"t.
sunworldst Posts: 1 Rating: (0)
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8/6/2014 4:00 PM	Rate (0)
Ste39 Posts: 4620 Rating: (710)	mokhakram it's write protected reading and writng and i have the source of the program but i need to modify on it and download it again Three times: cpu 315 with forgotton password
Ste39 Posts: 4620 Rating: (710)	Last edited by: Ste39 at: 8/6/2014 4:01 PM
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8/11/2014 8:40 AM	Rate (0)
Ayman Elotaify Diamond Expert Joined: 5/28/2008 Last visit: 12/23/2025 Posts: 4522 Rating: (843)	mokhakram it's write protected reading and writng and i have the source of the program but i need to modify on it and download it again Hello, Before beginning the following procedure, please be sure that who will follow these steps is an authorized person. It will be better to get the password from the programmer. Please be sure after modifing the software that it will not affect on safety of personel or machinery. Go to HW config. Double click on CPU. Go to protection tab, check "key switch setting" and uncheck "can be bypassed with password" Buy a new MMC make all necessary modifications. redownload software to the new MMC. Hope this helps.
	Ayman Elotaify
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