
PLC device configuration
6.1 Configuring the operation of the PLC system
S7-200 SMART
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System Manual, V2.3, 07/2017, A5E03822230-AF
Accessing a password-protected CPU
Note
When you enter the password for a password-protected CPU, the authorization level for that
password remains effective for up to one minute after the programming device has been
disconnected from the S7-200 SMART CPU. Always exit STEP 7-Micro/WIN SMART before
disconnecting the cable to prevent another user from unauthorized access.
Entering the password over a network does not compromise the password protection for the
S7-200 SMART CPU. If one authorized user is accessing restricted functions across a
network, that does not authorize other users to access those functions. Only one user is
allowed unrestricted access to the S7-200 SMART CPU at a time.
Disabling a password
You can disable the password by changing the privilege level 4, 3, or 2 to "Full privileges"
(Level 1), since Level 1 allows all unrestricted CPU access.
Note
If the privilege level is at "Disallow Upload" (Level 4), you cannot download a new system
block with a new password level if a valid user program exists. You must delete the user
program first, and then you can download an updated system block.
What to do if you forget the password
If you forget your password, you must reset your PLC to factory defaults. (Refer to clear PLC
Содержание SIMATIC S7-200
Страница 30: ...Product overview 1 7 Programming software S7 200 SMART 30 System Manual V2 3 07 2017 A5E03822230 AF ...
Страница 267: ...Program instructions 7 6 Counters S7 200 SMART System Manual V2 3 07 2017 A5E03822230 AF 267 HSC modes 3 and 4 ...
Страница 394: ...Program instructions 7 18 Subroutine S7 200 SMART 394 System Manual V2 3 07 2017 A5E03822230 AF ...
Страница 425: ...Communication 8 5 PROFIBUS S7 200 SMART System Manual V2 3 07 2017 A5E03822230 AF 425 ...
Страница 786: ...Technical specifications A 11 S7 200 SMART cables S7 200 SMART 786 System Manual V2 3 07 2017 A5E03822230 AF ...
Страница 798: ...Error codes C 4 PLC fatal error codes S7 200 SMART 798 System Manual V2 3 07 2017 A5E03822230 AF ...
Страница 848: ...Ordering information F 6 Human Machine Interface devices S7 200 SMART 848 System Manual V2 3 07 2017 A5E03822230 AF ...