Rockwell Automation 2711 PANELBUILDER SOFTWARE USER MANUAL - Manual (Page 278)

The Objects
Chapter 10
10-13
Control List Selector without Enter
The Control List Selector without Enter object allows the operator to
choose from items in a list by means of Up Cursor and Down Cursor
buttons.
Unlike the Control List Selector with Enter, the selections are continually
highlighted and updated to the PLC controller. That is, as the operator
moves the cursor to each item, the item highlights and the corresponding
state value is transferred to the PLC input addressed by the Control
address.
The Control List Selector without Enter consists of the following
components:
List—is a vertical list that can contain up to 24 different items (12 with
double size text). The operator presses the Up Cursor or Down Cursor
buttons to move through the list.
Up Cursor (Decr Value) Button—moves the selection up by one list
entry, and updates the list position number in the PLC input address.
(0 = the first item in the list.)
Down Cursor (Incr Value) Button—moves the selection down by one
list entry, and updates the list position number in the PLC input address.
You can build a simple two position Control List Selector and include only
the Up Cursor button. Functionally, the result is the same as a Maintained
Push Button or a hard-wired two-position selector switch. However, you
would also have a two position list with the current selection highlighted.
You could even use Outer Text to add an extra label.
IMPORTANT: The Control List Selector without Enter is a retentive
object. Your PanelView terminal will retain the current value for the
Control List Selector without Enter even after you have turned the terminal
off or switched to Configuration mode. The PanelBuilder Development
Software will allow you to enter a preset value for this object.
Choose List in the Object Menu to configure the selector list. The Number
of States you assign determines the height of the list. For single height
characters, you can have up to 24 states; for double height characters you
can have up to 12 states. If you include a border around your list you will
lose two single size or one double size entry. Similarly, the width you
specify for the list will determine how many characters you can fit on a
line for each state.