thomas van damme

Hello,

For a project I need to use 2 HMI TP177b in combination with a CPU226.
Operators will be able to make modification in a production process by making changes on the HMI devices.
Now it is very important that only authorised persons can do this, and therefore i need to know how I can protect my devices with a password.
I searched in WINCC for some functions which can be usefull but I do not come to any result.
Is there any tuturial or an downloadable exapleprogram?
This would help me a lot.

With kind regards
Thomas