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  • Writer's pictureDestek Ekibi

Security -TiaPortal

Security means protection of technical systems against sabotage, espionage and human error.

Protection functions

​To set up secure networks, the ​SIMATIC S7-1500​ automation system offers an integrated security concept:

Overview of protection functions


​Protection of confidential configuration data : ​Protection of confidential CPU configuration data

​Integrity protection :​The CPUs come with an integrity protection function as standard. This helps to detect possible manipulations:

· ​To the engineering data on the SIMATIC Memory Card

· ​To the engineering data during data transfer between TIA Portal and CPU

· ​To the engineering data during data transfer between HMI system and CPU

· ​To the encrypted firmware

​Know-how protection :​Protection against unauthorized access and modifications to algorithms by means of password protection

​Copy protection :​Protection against duplication of programs by linking individual blocks with the serial number of the original memory card on the ​SIMATIC​ memory card

​Access protection :​Protection against unauthorized configuration changes using authorization levels

​Locking the CPU: ​Protection against unauthorized access by locking the front cover with a seal or a lock


​You can find more information about security mechanisms of the SIMATIC automation systems in the ​Security with SIMATIC S7 controllers​ document and in the ​Communication​ function manual.

Secure Communication

​It is becoming increasingly necessary to transfer data to external computers in encrypted form via Intranet or public networks.

​SIMATIC S7-1500 CPUs and ET 200 CPUs with firmware version 2.0 and higher support the Internet PKI (RFC 5280) with STEP 7 as of V14. This makes the configuration and the operation of Secure Communication possible, for example:

·​Hypertext Transfer Protocol Secure (HTTPS)

·​Secure Open User Communication

·​Secure Communication with OPC UA

​A public key infrastructure (PKI) can issue, distribute and check digital certificates. For S7-1500 CPUs, you create certificates for various applications in the CPU properties in STEP 7, for example: TLS certificates for Secure Open User Communication, Web server certificates, OPC UA certificates.

​With STEP 7 and WinCC as of Version V17, SIMATIC S7-1500 CPUs and ET 200 CPUs from firmware version 2.9 support innovated and standardized secure PG/PC and HMI communication – referred to as Secure PG/HMI communication for short.

Communications processors with integrated security functions

​For special requirements of your plant, use communications processors​ with integrated security functions, such as access protection using a firewall, protection against data manipulation using VPN, FTPS, HTTPS, SNMPv3 and secure NTP.

Advantages and customer benefits

​The protection functions listed above protect your investments from unauthorized access and manipulation, helping to secure plant availability.


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