Instruction manual

ControlWave Micro Display/Keypad Instruction Manual (D5135)
Chapter 3 – Using the Dual-Button Keypad / Display
The dual-button display/keypad shows variable information through a
series of lists. The dual-button display/keypad does not support
changing variable values or status information; for that, you must have
the 25-button keypad.
From an opening screen, you enter a list selection screen to select the
list you want to view, and then the display scrolls through the variables
in the list, one at a time, at a user-defined rate so you can view variable
values and status information.
If there is no keypad activity for a certain period of time, scrolling stops
and the display shuts off to conserve power until you press any key.
When you press a key after the timeout the display returns to the
opening screen.
Note: Your application programmer can specify the length of time
before scrolling stops through the iiDisplayBlankTime
parameter in the DISPLAY function block.
Dual-Button
Keypad
The two buttons available are the down-arrow (ITEM) and right-arrow
(LIST) buttons. Table 3-1 describes the function of these buttons.
Figure 3-1. Dual-Button Keypad
Table 3-1. Dual-Button Keypad Functions
Key Usage
ITEM
Press this to:
 Go through the list of available lists.
 Start/Stop scrolling of the currently selected list.
LIST
Press this to:
 Go from the Opening screen to the List Selection
screen.
 Choose the current list on the List Selection screen
for viewing. This calls up the Display Element screen
(which shows the variables in the chosen list).
 Go back to the List Selection screen from the
Issue Nov-2010 Using the Dual-Button Display/Keypad 3-1