Omron NT21 User Manual

2-1SectionPT Screens
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2-1 PT Screens
This section describes the PT screens, which are the basis of PT functions.
2-1-1 Screen Composition
The size of the NT21, NT31/NT31C and NT631/NT631C screens are as follows:
NT21: 260 dots wide by 140 dots high
NT31/NT31C: 320 dots wide by 240 dots high
NT631/NT631C: 640 dots wide by 480 dots high
The location of each dot is expressed by Cartesian coordinates: an X coordinate
(horizontal direction) and a Y coordinate (vertical direction). The coordinate ori-
gin (0, 0) is at the top left of the screen.
319
0
0
239
319,239
X coordinate (horizontal direction)
Coordinates (X, Y)
NT31/NT31C NT631/NT631C
6390
0
479
639,479
X coordinate (horizontal direction)
Coordinates (X, Y)
Y coordinate (vertical direction)


Y coordinate (vertical direction)
259
0
0
139
259,139
X coordinate (horizontal direction)
Coordinates (X, Y)
NT21
Y coordinate (vertical direction)

2-1-2 Screen Numbers
The screens of the PT are classified and managed by screen numbers.
Screen numbers are used to designate the first screen displayed when the PT is
started up, and to designate the objective screen when switching the screen dis-
play, etc.
The PT allows up to 3999 screens to be registered, apart from those screens
reserved for specific functions. For these 3999 screens, screen numbers can be
designated without restriction within the range 1 to 3999. There are also no re-
strictions on the order of screen numbers, they can be discontinuous either.
When creating a screen at the PT with the Support Tool, designate a screen
number and then register the display elements.
2-1-3 Screen Types
The screens that can be displayed by the PT are classified as follows according
to their function:
• Normal (standard) screens
• Overlapping screens
• Window screens
• System screens
Normal (Standard) screens are the basic screens of the PT. There are no specif-
ic functions themselves and their purpose is to display elements that have al-
ready been registered.
Normal (Standard) screens can be registered under any screen numbers in the
range 1 to 3999.
Normal (Standard)
Screens

Omron NT21 Specifications

General

Brand	Omron
Model	NT21
Category	Touch terminals
Language	English