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[?]: Unlock S7-400 password level 3

Posted: Fri Nov 02, 2012 8:15 pm
by consol
Hi,
I have S7400 CPU that is password protected (level 3).
My client has forgotten the password.
I am running KeyS7 at moment but will take a long time.

I have the original program files.
Is it possible to get the password from these files?

Thanks,

Re: [?]: Unlock S7-400 password level 3

Posted: Fri Nov 02, 2012 8:42 pm
by CoMod
S7-400 with/out Memory Card (Flash or RAM) ?

Re: [?]: Unlock S7-400 password level 3

Posted: Sun Nov 11, 2012 8:39 am
by hafroe
a machine supplier never forgets his password, i think there is another reason that you dont receive the password from them.

Re: [?]: Unlock S7-400 password level 3

Posted: Sun Nov 11, 2012 11:56 pm
by dekor
Hello to all,
I have a new machine with CPU 417 with RAM card.
For the CPU is protected with password.
I meet the programmer guy, and he said that is possible to monitor a value on PLC without enetering the password .... ?
I dont have the program stored off line in my computer.
Do you agree with the programmer?
If I use the tool to reveal the password, it will be visibile my access, even if I dont modify the program?
I intend to monitor an analog value.
The programmer said that he protect the program in order to have a standard machine in all factories, as long the contract ask.
On his factory he show me that he access the CPU, but I think this was possible because he had the program allready on his computer.

OK. I need just to monitor an analog value, for debug, not to modify something.
Do you think it oh possibile without entering rigth password ?
Shoold I use the utility to reveal password?

Best regards,
dekor.

Re: [?]: Unlock S7-400 password level 3

Posted: Mon Nov 12, 2012 12:34 pm
by dekor
Hi to all,

I found the answer: is is possible.
This are the steps:
1. search for accessible nodes
2. select desired CPU
3. display blocks
4. Click on menu bar: PLC, Monitor / Modify Variables
5. Type on table the adresses necesary to be monitored
6. Select desired format
7. Monitor.

dekor.

Re: [?]: Unlock S7-400 password level 3

Posted: Thu Nov 15, 2012 10:25 pm
by habibian
your plc have mmc card?
i can open password.

Re: [?]: Unlock S7-400 password level 3

Posted: Wed Mar 01, 2017 8:27 am
by CwcPLC
Hello the S7-400 on the Flash CARDS on the computer while reading the card need to drive, is there any way to read password?
thank you