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Appendix A
Specifications
425
Item
Specification
Display colors
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 tables
1024
Character string memory tables
1024
Bit memory tables
1024
Mathematical tables
1536
Memory table indirect references
100
Background memory tables
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 when referenced indirectly)
Library data
None (1 numeral memory table 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
ib d b l
i thi t bl
Lamps
One or two host bits (number of
host bits set with lamp property)
y
g
y
described below in this table.
Numeral inputs
One numeral memory table
Add one host bit when using the interlock
f
i
Character string inputs
One character string memory
tables
g
function.
Thumbwheel switches
One numeral memory table
Numeral displays
Direct specification
One numeral memory table
y
Indirect specification
One numeral memory table
One memory table indirect reference
Character string displays
Direct specification
One character string memory table
g
y
Indirect specification
One character string memory table
One memory table indirect reference
Recipe
None
Bar graphs
One numeral memory table
When numeral memory tables are designated for each of the –100%, 0%, and 100%
settings for each graph line, one numeral memory table is read for each of these
settings.
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Summary of Contents for NT21 Series
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