Omron NT620C, Руководство по эксплуатации

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5-2 Section Memory Tables and Graphs
207
always specify this number in BCD format. Also make sure that you do not
specify a number outside the range of memory table numbers that actually ex-
ist (for example by specifying “0500” when the number of character-string
memory tables is set to 256).
If the contents of the memory table used for indirect specification are written in
hexadecimal format, or if the specified memory table number is outside the
available range, the display will not be updated.
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Important points when writing character-strings
The important points when displaying character-strings are the same as those
that apply for indirect specification. See the “Important points when writing
character-strings” when using direct specification (page 204).
Example of Changing a Character-String in Indirect Specification
An example in which the character-strings being displayed are changed by ad-
ding the contents of the word allocated to the numeral memory table which is
used in indirect specification is given below.
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Setting by the support tool
Perform the following setting with the support tool.
Numeral memory table number 51: DM0000 (registration word: 1)
Character-string memory table number 100: NT612G (6 digits)
Character-string memory table number 101: NT610C (6 digits)
Character-string memory table number 102: NT620S (6 digits)
Character-string memory table number 103: NT620C (6 digits)
Contents to be registered for the screen: Numeral memory table number 51
Line 1
NT612G
Display of character-string (specification of numeral
memory table number 51 in indirect specification)
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PC program
Create the following PC ladder program.
@INC(38)
DM0000
00100
00101
@DEC(39)
DM0000
(1)
Numeral memory table number used
for indirect specification
(2)
Numeral memory table number used
for indirect specification