Color Display - Omron NT31 Operation Manuals

NT31/NT31C Screen
Restrictions Relating to Screen Attributes
7-1-5

Color Display

Available Colors
Reference: XOR is the abbreviation of eXclusive OR. Color combinations that are opposites
260
The functions of the backlight and buzzer attributes can also be performed using
the PT status control bits. (And the buzzer can also be operated with a touch
switch.) When a screen for which one of these attributes is set is displayed, the set
function is executed regardless of the status of the PT status control bits, but the
status of the backlight or buzzer can be changed later by using another operation.
Depending on the screen attribute settings and the PT status control bit statuses,
the PT status control bit statuses may not match the actual operation (ex. the
buzzer bit in the PT status control bits may be set to "stopped" although the buzzer
is actually sounding). In such a case, carry out PT status control bit operations to
make the statuses agree with the actual status of the NT31/NT31C.
For details on the PT status control bits, refer to 7-2-1 "PT Status Control Area"
(page 265).
The NT31C can display the entire screen, and elements such as text and graphics,
in eight different colors. Specify a color as an attribute for each display element
when creating a screen with the Support Tool.
The NT31C can display the following eight colors.
Black, blue, red, magenta, green, cyan, yellow, white
The four color combinations below are in an XOR relationship.
The NT31/NT31C has a function which prevents the display of an element on a
background of the same color (making it invisible) by changing the color of the ele-
ment to the color which is in XOR relationship with its present color.
Black ⇔ White, Blue ⇔ Yellow, Red ⇔ Cyan, Magenta ⇔ Green
The following kinds of display elements are displayed in the above combinations of
colors.
- Frame of input fields for numeral/character string input, and screen back-
ground color (page 417).
- Display color of eight dots beyond the top of a bar graph, and screen back-
ground color (page 372).
in terms of the three primary colors — red, green, and blue — are called to be in an
XOR relationship.
Example: Blue (red 0, blue 1, green 0) ⇔ Yellow (red 1, blue 0, green 1)
Section 7-1