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S7-300 Protection Level

Created by: Goran_ at: 10/19/2011 4:23 PM (5 Replies)

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10/19/2011 4:23 PM	Rate (0)
Goran_ Posts: 141 Rating: (0)	I have set protection level to Write protection, and assigned pwd. When I wanted to check if it is working, I was asked for pwd, so I typed it, pressed ok, and I was able to download that. So far everything ok. The problem is that now it doesnt ask for any authorization. Even if I change pwd, it still doesnt ask for any authorization and allows me to write data. How is this possible, where are my credentials saved, and how can I return to the mode where authorization was required?
Goran_ Posts: 141 Rating: (0)
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10/19/2011 5:50 PM	Rate (0)
miami Platinum Expert Joined: 8/31/2005 Last visit: 9/14/2023 Posts: 2194 Rating: (322)	Did you try to remove the MPI cable or to switch off the PLC?

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10/19/2011 9:30 PM	Rate (0)
Goran_ Posts: 141 Rating: (0)	Yes, I have tried to switch off/on the PLC, and nothing, I was still able to download data without any restrictions.
Goran_ Posts: 141 Rating: (0)
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10/20/2011 7:38 AM	Rate (0)
UMENCHO Diamond Member Joined: 3/21/2006 Last visit: 7/12/2023 Posts: 10221 Rating: (1177)	Hello Goran, Did you try with memory reset and with a new project download? Best regards, Hristo Mihalev

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10/20/2011 8:08 AM	Rate (0)
fbelic Posts: 327 Rating: (28)	Greetings Just asking the obvious: did you exit Step7 Manager? Because it remembers the password until you exit it, so you don't have to write it every at every download. Best regards
fbelic Posts: 327 Rating: (28)
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10/20/2011 8:17 AM	Rate (0)
Goran_ Posts: 141 Rating: (0)	Yes, I have tried everything, and no success. This morning I tried again, and the it was asking me for credentials again. So the only way to make it forget entered credentials, is to restart the PC (not the PLC). :) After that it is ok. Thanks to both of you for trying to help.
Goran_ Posts: 141 Rating: (0)
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