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Security level
HMI access
No access (complete
protection)
Passwords are case-sensitive. To configure the protection level and passwords, follow these
steps:
1. In the "Device configuration", select the CPU.
2. In the inspector window, select the "Properties" tab.
3. Select the "Protection" property to select the protection level and to enter passwords.
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
Access restrictions
Allows HMI access and all forms of PLC-to-PLC communications without password protection.
Password is required for reading the data in the CPU, for modifying (writing to) the CPU, and for
changing the CPU mode (RUN/STOP).
Allows no access without password protection.
Password is required for HMI access, reading the data in the CPU, for modifying (writing to) the
CPU, and for changing the CPU mode (RUN/STOP)
Programming concepts
6.6 Protection
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