Rockwell Automation 2711 PANELBUILDER SOFTWARE USER MANUAL - Manual (Page 275)

The Objects
Chapter 10
10-10
Top Position Value
Top Position refers to the first item in the control list. In PanelBuilder
Versions 1 and 2, when the top selector position is chosen, all bits assigned
to the object are turned off. In Versions 3, 4 and 5 you can choose the value
that will be written to the control address when the highlight bar is in the
top position.
In the Selector Control Address menu, choose Top Position Value and
choose from:
Bit data type:
All Bits OFF
First Bit ON
BCD or binary
0
1
When the highlight bar is in the top position, the value 1 will be written to
the control address if the top position value is set to 1 (First Bit ON). Zero
will be written if the top position value is set to 0 (All Bits OFF).
Figure 10.2
Selector Control Address with Bit Data Type
22611
Selector Control Address
Current Address Unassigned Address
Current Preset
Data Type Bit
Communications Discrete
Input/Output Input
Rack 1
Start Word 0
Start Bit 0
Number of Bits 1
Top Position Value All Bits OFF
Update Address
Change Preset
View Address Map
Delete Address
Quit
All Bits OFF
First Bit ON