Omron NT-series Programmable Terminal V022-E3-1 - Manual (Page 184)

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Section 5-2

Contents of the character-string memory table
A character-string is stored in the allocated words beginning with the first word in
half-size or normal-size characters.
Two half-size characters or two normal-size character is stored in one word. One
memory table can store up to 16 words (32 characters).
Start Start + 1 Start + 19
Code 1 Code 2 Code 3 Code 4 Code39 Code40
[Character-string memory table display example]
To display the characters in order, allocate the characters as follows.
“A” = 41H, “B” = 42H Start
4 7 4 8
4 1 4 2
4 3 4 4
4 5 4 6
“ABCDEFGH”
“G” = 47H, “H”= 48H Start + 3
“E” = 45H, “F” = 46H Start + 2
“C” = 43H, “D”= 44H Start + 1

Character allocation bestriding two words.
Provided the order is correct, it is possible to assign two digits each of a four-digit
character code to successive words.
[Example of character code bestriding words]
“A” = 41H, “B” = 42H Start
A 0 4 4
4 1 4 2
4 3 E B
9 F E B
“ABC D”
“ ” = EBA0H Start + 3
“ ” = EB9FH Start + 2
“C” = 43H Start + 1
“D” = 44H
Characters with 8-bit codes (00 to 1FH) are displayed on the screen as a one-byte
space (20H). 00H is converted to 20H.
6-2-2 Changing Displayed Numerals or Character Strings
(Changing the Contents of Allocated Words....Direct Specification)
The following describes the procedure to change displayed numerals or character
-strings by changing the contents of the allocated words.
Numerals and character-strings can be changed also by making a copy of the
memory tables. Refer to “Copying the memory table” explained later.
To change the numerals or character-strings displayed on the NT600S, make
changes with the numeral or character-string memory table. To make changes
with the numeral or character-string memory table of the NT600S, change the con-
tents of words by the PC.
Allocated word (character-string memory table)
NT600S PC
Numeral memory
table 1
Character-string
memory table 4
Start
Start+1
Start
Start+1
Start+2
Allocated word
(numeral table)