Operating a project
8.2 Operating a project on TP 177micro
OP 73micro, TP 177micro (WinCC flexible)
124
Operating Instructions, 09/2007, 6AV6691-1DF01-0AB0
8.2.4
Project security
Overview
Operation of a project can be protected by the configuration engineer by implementing a
security system.
If operator control objects protected by a password are operated, the HMI device requests
the entry of a password. A logon dialog opens for you to enter the password.
Figure 8-8
Logon dialog
You can use the protected control objects after you completed the logon.
The Logon dialog can be set up by the configuration engineer via an individual operator
control object.
In the same way, the configuration engineer can set up an operator control object to log off.
After logging off, objects assigned password protection can no longer be operated; to do so,
log on again.
Further information on this may be available in your plant documentation.
Logoff time
A user logoff timeout can be set in the system. If the time between any two user actions, e.g,
entering a value or changing screens, exceeds this logoff time, the user is automatically
logged off. The user must then log on again to continue to operate objects assigned
password protection.
Password
The password and logoff timeout values are coded in a list and saved to non-volatile memory
on the HMI device.
Note
Depending on the transfer settings, changes to the password list are overwritten when the
project is transferred again.
Backup and restore
You can backup the password and restore it using ProSave or WinCC flexible.
NOTICE
On restoring, the currently valid password is overwritten. The restored password is
immediately valid.
