User databases (user DBs)

User databases (user DBs) 1:

Allow operating system access for authorized users only

The content of the user database is protected against manipulation with a signature. The names of groups, object protection levels and users are not encrypted and could be read. Access to the IPC should be restricted to authorized users via the operating system.

User databases (user DBs) 2:

No changes in settings of a user database when a project is open

No project may be open when changing the settings of a user database.

User databases (user DBs) 3:

No change of user when a project is open

No project may be open when changing the user.

New from TwinCAT 3 Build 4024.8: Extensions for user databases

A user database can be extended by so-called "extensions" from this version onwards. You can find details in the chapter Extensions for user databases.