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System overview
2.3 S7-1500 R/H-CPUs
S7-1500R/H redundant system
38
System Manual, 10/2018, A5E41814787-AA
2.3.3
Security
Security means the protection of technical systems against sabotage, espionage and human
error.
Protection functions
For the setup of secure networks, the S7-1500R/H redundant system has an integrated
security concept from authorization levels up to block protection:
Table 2- 5
Overview of protection functions
Protection function
Description
Access protection
Protection against unauthorized configuration changes through four authorization levels
and an integrated firewall
Know-how protection
Protection against unauthorized access and modifications to algorithms with password
protection
CPU lock
Protection against unauthorized access by locking the front cover with a seal or a lock
Access protection example
You can choose from four different access levels in the TIA Portal to restrict user access to
functions and memory areas.
Figure 2-12 Access protection
If you only want to allow users access over HMI, for example, select the access level "HMI
access" in the TIA Portal. Only HMI access and access to diagnostics data is then possible
without entering a password.
Users can read and write tags over an HMI device with this access level.
Users cannot:
●
Download blocks or the hardware configuration to the CPU
●
Upload blocks or the hardware configuration from the CPU to the PG/PC
●
Run writing test functions
●
Change the operating state from the PG/PC
●
Run firmware updates
Содержание Simatic S7-1500H
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