6 Local Control Panel
(continued)
C232-302-401/402/403/404-603 / C232/EN M/A23 6-19
6.5.3 Change-Enabling Function
Although it is possible to select any data point in the menu tree and read the associated
value by pressing the keys, it is not possible to switch directly to the input mode. This
safeguard prevents unintended changes in the settings.
There are two ways to enter the input mode.
Global change-enabling
function
To activate the global change-enabling function, set the ‘Param. change enabl.’
parameter to ‘Yes’ (menu tree: ‘Oper/CtrlTest/LOC’).
The change can only be made after the password has been entered. Thereafter, all
further changes – with the exception of specially protected control actions (see the
section entitled ‘Password-Protected Control Actions’) – are enabled without entering
the password.
Selective change-enabling
function
Password input prior to any parameter change.
The password consists of a pre-defined sequential key combination entered within a
specific time interval. The following example is based on the factory-set password. If
the password has been changed by the user (see the section entitled ‘Changing the
Password’), the following description (next page) will apply analogously.
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