Omron NT31 Operation Manuals page 272

NT31/NT31C Screen
Reference: When screen data is created for an NT31, black and white are displayed as white
Transparent Display
S Color correspondence between NT31C and NT31
The only colors that an NT31 can display are white and black.
The screen data for an NT31C can be displayed on an NT31 without alteration
and in this case the color correspondences are as follows.
Colors at NT31C
Black, blue, red, magenta
Green, cyan, yellow, white
and black respectively at the Support Tool. On the display of a monochrome per-
sonal computer, the display at the NT31 matches the colors displayed at the Sup-
port Tool, but when a personal computer with a color display is used, the colors are
reversed.
When elements are displayed on top of others, normally the background color of
the element on top conceals the element below so that it cannot be seen.
Besides the above eight colors, the color "transparent" is available for the back-
ground of some display elements.
When "transparent" is set, nothing appears behind a display element, and the dis-
play element or screen background color underneath it is visible.
<Normal display>
Graphic under character
A
Character
Background color
S Possible applications of the color designation "transparent"
- Background color of normal display text
- Background of labels for lamps and touch switches (fixed as "transparent")
- Display color of lamps and touch switches when they are off
- Background color of tiling patterns for graphics
- Background color of marks
Colors at NT31
White
Black
<Transparent display>
Graphic under character
A
Character
Background color (transparent)
Section 7-1
261