6 Operation
6.3 Configuration of the Device
68
SICAM I/O Unit, 7XV5673, Device Manual
E50417-H1040-C484-A3, Edition 05.2012
6.3.2
Access to the Passive Parameter Set by Multiple Users
Reading the Passive Parameter Set
The user interface allows the simultaneous read access of up to 3 web servers to the passive parameter set.
Editing the Passive Parameter Set
The passive parameter set can only be edited from one PC or notebook even though multiple users have
simultaneous read access.
Once a user changes a parameter on the user interface, the write access is denied for all other users.
If the write access is blocked,
modified
in brackets will be displayed in the upper right corner of the user inter-
face. The user making the changes will see
modified
without brackets, see Figure 6-21
.
Figure 6-21
Configure Tab, Access Blocked
If a user makes a change, the server starts a 20-minute timer. If no further changes to the parameter set are
entered by the time the timer has counted down, write access is released again for all users. In this case, the
modified data are discarded and the passive parameter set is overwritten with the content of the active param-
eter set.
If new changes to the passive parameter set are made during the 20-minute countdown, the timer is restarted
by each action.
If the user has completed his changes to the passive parameter set or finished the parameterization by clicking
the
Cancel
button, write access for all users is also released.
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