SIMATIC Logon is a central user administration system with access control which was introduced into the process control system as of SIMATIC PCS 7 V6.0. Up to and including V6.1, SIMATIC Logon was offered in the form of separate products whose version cycle was asynchronous to the version cycle of SIMATIC PCS 7.

As of SIMATIC PCS 7 V7.0, the SIMATIC Logon software and licenses are fully integrated in the process control system. Since then, updating is carried out synchronous with SIMATIC PCS 7.

With the online compatibility tool, you can determine the SIMATIC Logon versions that are suitable for the various SIMATIC PCS 7 versions:

https://support.industry.siemens.com/cs/de/en/view/64847781