Omron NT21 Reference Manual page 451

Compatibility with Screen Data of Other PT Models
Item
Initial Host connect screen
screen
System Possible
keypad
Image/li- None
brary data
Windows None
Display Half-size/standard-size characters, marks, image/library data.
items
treated as
string
character
Control 00 to 20 : Space
H
codes in
character
strings
Numeral Normal, reverse, flashing, reverse and flashing, transparent display
display,
character
string dis-
play attrib-
utes
Bit None
memory
table set-
ting
Memory Numeral/character string type:
table copy
Set at word n+2 (copy type) of the PT status control area
(0: character string memory table, 1: numeral memory table)
Copy timing:
When the value of the n + 1 word or the n + 2 word in the PT
status control area changes.
Interlock Not available
function
Labels Fixed character strings only (1 line only)
(Guide
charac-
ters)
Touch Only the graphic part is displayed in reverse video.
switches
Example:
lamp with
free-shape
display
frames
438
NT20S
Label
NT21
System initializing screen
Not possible
Use touch switches instead.
Also, symbol manager can be used at the Support Tool.
Image data: 0001 to 0FFF
H
Library data: 1000 to 3FFF
H
S Up to 3 screens can be displayed (1 global window, 2 local
windows)
S Display elements that can be registered on a window
All the display elements other than thumbwheel type numeral input
and recipe objects (However, only 1 numeral/character string input
(temporary input field) can be displayed.)
S Window screen size, 20-dot units
Half-size/standard-size characters, marks
00 , 0A : Cut out subsequent display
H H
01 to 09 , 0B to 20 : Space
H H
Standard, flash, inverse flash
Setting of recording in an alarm history and screen switching are
possible.
Numeral/character string type:
Set at word n+2 (memory table copy type) of the PT status
control area (0: character string memory table, 1: numeral
memory table)
Copy timing:
Copying is executed when the word n+3 bit3 (Memory table copy
execution) of the PT status control area changes to 1.
The interlock function can be set for individual touch switches,
numeral inputs, thumbwheel inputs, character string inputs and recipe
objects to enable/disable operation according to the status of the
interlock bit allocated in the host.
Four kinds of character strings are available:
Fixed character strings (Multiple lines are possible.)
ON/OFF switching character strings (Multiple lines are possible.)
Numeral displays (Displays numeral memory table entries.)
Character string displays (Displays character string memory table
entries.)
Only the graphic part is displayed in reverse video; projecting parts
are not displayed.
Example:
Label
Appendix B