Omron NT31C Reference Manual page 53

PT Screens
Reference: When screen data is created for an NT31, black and white are displayed as white
Transparent Display
42
Color Correspondence Between Color and Monochrome PTs
The only colors that a monochrome PT can display are white and black.
The screen data for a color PT can be displayed on a monochrome PT without
alteration and in this case the color correspondences are as follows.
Color on a color PT
Black, blue, red, or magenta
Green, cyan, yellow, or white
Likewise, the screen data for a monochrome PT can be displayed on a color PT
without alteration and in this case the color correspondences are as follows.
Color on an NT31
White
Black
and black respectively at the Support Tool.
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
Possible Applications of The Transparent Color Designation
• 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
Impossible Applications of The Color Transparent Designation
• Background of character strings displayed from character string memory
tables
• Background of numeric values displayed from numeral memory tables
• Background of numeric values and character strings in numeral setting input
fields and character string input fields
• Background of characters indicating percentages (%) on graphs
• Display color of lamps and touch switches when lit
• Background color of temporary input fields
Color on an NT31
White
Black
Color on an NT631
Black Black
White (EL lit color) White
<Transparent display>
A
Background color
(transparent)
Section 2-1
Color on an NT631
Black
White (EL lit color)
Color on a color PT
Graphic under character
Character