Omron NT21 User Manual

Appendix ASpecifications
431
Item Specification
Graphics Polyline, circle, arc, sector, rectangle, polygon
Line type 4 types only for polylines (solid line, broken line, alternate long and short dash, long and
two short dashes)
Tiling 10 types
Graphic display attributes Standard, inverse, flash, inverse flash
Display colors NT21, NT31, NT631: 2 colors (black, white)
NT31C, NT631C: 8 colors (black, blue, red, magenta, green, cyan, yellow, white)
Color specification Foreground color, background color, boundary color (line color)
*1: Usable only when ISO8859-1 font type is selected at the Support Tool.
Display Restrictions
Apart from the restrictions on the maximum number that can be displayed, the following restrictions apply to indi-
vidual elements.
• Restrictions on data reading
With PT, the maximum quantity of data that can be read simultaneously is fixed, and elements that exceed this
data quantity limit are not displayed on the screen. Note that even if the same data is read from different ele-
ments, each instance is counted separately.
The table below shows the maximum data quantities for each type of read data.
Item Maximum data quantity
Host bit 1024
Numeral memory table entries 1024
Character string memory table
entries
1024
Bit memory table entries 1024
Mathematical table entries 1536
Memory table indirect references 100
Background memory table
entries
128
The data quantity restrictions for each type of element read are indicated in the table below. Ensure that the
totals for a displayed screen are within the range restrictions indicated above.
Element Restriction on Read Data
Fixed displays (text,
graphics)
None
Image data None (1 numeral memory table entry when referenced indirectly)
Library data None (1 numeral memory table entry when referenced indirectly)
Marks None
Touch switches Zero to four host bits (number of
host bits set with touch switch
property)
When using numeral or character string displays
as guide characters, that data is read just like the
numeral displays and character string displays
d ibdbl i thi tbl
Lamps One or two host bits (number of
host bits set with lamp property)
py g py
described below in this table.
Numeral inputs One numeral memory table entry Add one host bit when using the interlock
fi
Character string inputs One character string memory
table entry
g
function.
Thumbwheel switches One numeral memory table entry
Numeral displays Direct specification One numeral memory table entry
py
Indirect specification One numeral memory table entry
One memory table indirect reference

Omron NT21 Specifications

General

Brand	Omron
Model	NT21
Category	Touch terminals
Language	English