Hi

As new versions are developed, Siemens has implemented a series of cybersecurity mechanisms in its controllers. Special focus has been placed on access security.

To increase security and facilitate these configurations, from STEP 7 V17 onwards a security wizard is presented to the programmer when inserting a CPU into the project.

From TIA V20 onwards, new steps have been introduced to facilitate the management of users and their accesses.

Hi

As from TIA V21, there are one important improvement in the Security settings wizard:

In the Protection of confidential PLC data (S7-1500, S7-1200 G2): there is an additional parameter (Additional protection of downloadable configuration data) that when activated encrypted the configuration data in the SIMATIC.S7S folder on the SIMATIC Memory Card and can only be decrypted with the password for protection of confidential configuration data.

More references could be found in online documentation, in https://docs.tia.siemens.cloud/r/simatic_s7_1500_et_200mp_manual_collection_enus_21/comprehensive-information/communication-function-manuals/communication/communications-services/secure-communication/requirements-for-secure-communication/protection-of-confidential-configuration-data