Omron NT30C-ST141-E Operation Manual page 219

Memory Tables and Graphs
5-2-2 Changing Displayed Numerals or Character Strings, Direct
Specification
Procedure 1. Use the NT-series Support Tool to allocate the numeral and character string
Two normal-size characters or one mark is stored in one word. One memory
table entry can store up to 20 words (40 characters).
Start Start + 1
Code 1 Code 2 Code 3 Code 4
ASCII control characters (00 to 1FH) are displayed on the screen as a space
character (20H).
Character String Memory Table Entry Display Example
To display the characters in order, allocate the characters as follows.
A = 41H, B = 42H Start
C = 43H, D = 44H Start + 1
E = 45H, F = 46H Start + 2
G = 47H, H = 48H Start + 3
The following describes the procedure to change displayed numerals or charac-
ter strings by changing the contents of the allocated words.
If using indirect specification, refer to Changing Displayed Numerals or Charac-
ter Strings, Indirect Specification (page 209).
Numerals and character strings can also be changed by copying between
memory table entries: see Copying Memory Table Entries (page 212).
To change the numerals or character strings displayed on the NT30/30C, make
changes with the numeral or character string memory table entry. To make chan-
ges with the numeral or character string memory table entry of the NT30/30C,
change the contents of words by the PC.
NT30/30C
12345678
abcdef
When it is necessary to display changing data such as monitored data of words in
the PC, use the numeral and character string memory tables. This must be used
to change the display contents (contents of memory table entries and words).
memory tables to the PC memory.
2. Register the memory table entries for the numerals and character strings to
be displayed when creating the screen data by using the NT-series Support
Tool.
To display a character string, use a character display and specify the charac-
ter string memory table entry by using the NT-series Support Tool.
To display numerals, use a numeral display and specify the numeral memory
table entry by using the NT-series Support Tool.
4 1 4 2
4 3 4 4
4 5 4 6
4 7 4 8
PC
Numeral memory
Start
table entry 1
Start+1
12345678 Allocated word (character string memory table entry)
Start
Start+1
Start+2
abcdef
Character string
memory table
entry 4
Section 5-2
Start + 19
Code39 Code40
ABCDEFGH
Allocated word
(numeral table entry)
207