Description

Even the basic system guarantees access protection which means that only authorized personnel have access within the scope of their responsibility at the operator panel. In this context, each user is assigned to a user group with defined function privileges.

This prevents unauthorized users from changing recipes or starting process steps without permission, for example. Apart from this,  two-component authorization comprising a user ID and password, password aging (to ensure that passwords are renewed on a regular basis), blocking users by the administrator and automatic logout if users are inactive for a relatively long period of time are additional system functions that ensure high quality standards in production.

With WinCC flexible 2008 new functions have been added:

Thanks to the integration into the central, plant-wide user administration with SIMATIC Logon, WinCC flexible also covers the requirements according to FDA 21 CFR, Part 11.

By means of the option WinCC flexible/Audit, all relevant changes of tags and any operator inputs are recorded as audit trails.