Select the System Settings tab to open the [System
Settings].
If the [System Settings] tab is not displayed
in the workspace, on the [View (V)] menu, point to [Workspace (W)],
and then click [System Settings (S)].
From [Display], select [Display Unit].
In [System Data
Area], select the [Enable System Data Area] and [Control: (1 Word)]
check boxes.
If you turn ON Bit 1 in the [Control: (1 Word)]
address specified in step 3 while Bit 5 is OFF, the contact to
sound an external buzzer turns ON. You can then connect and operate
an external power supply and a buzzer or revolving light.