Omron NT30C-ST141-E Operation Manual page 222

Memory Tables and Graphs
Procedure 1. Set the PC area for the numeral memory table entries to be used for indirect
210
In this section, the procedure for changing the display contents by using method
(1) is explained.
Method (2) involves changing the contents of the allocated table entry. For de-
tails, refer to the sections on memory table entry copy (page 212) and changing
displayed numerals or character strings (direct specification) (page 207).
NT30/30C
Indirect numeral table entry 41
AaBb
Character string memory table entry 39
Character string memory table entry 40
This method is convenient when switching the display at the same location, for
example when monitoring a series of words, or when using unique codes to
specify individual character strings, etc.
specification of numeral/character display using the NT-series Support Tool.
2. When creating the screen data with the NT-series Support Tool, register for
the screen the numeral memory table entry accessed using an indirect speci-
fication. Set "Indrct" for "Ref way".
For a character string, specify the numeral memory table entry by using the
character display function of the NT-series Support Tool.
For numerical values, specify the numeral memory table entry by using the
numeral display function of the NT-series Support Tool.
3. Using the table edit function of the NT-series Support Tool, write the data to
be displayed to the memory table entry that is used for display. Use a numeral
memory table entry to display numerals and use a character string memory
table entry to display character strings.
4. Program the PC to change the contents of the word allocated to the numeral
memory table entry that is used in indirect specification.
S Important Points when Writing Memory Table Entry Numbers
When writing the number of the memory table entry whose contents are to be
displayed to the numeral memory table entry to be accessed using an indirect
specification, always specify this number in BCD format. Also make sure that
you do not specify a number outside the range of memory table entry numbers
that actually exist (for example by specifying 0500 when the number of charac-
ter string memory table entries is set to 256).
If the contents of the memory table entry used for indirect specification are writ-
ten in hexadecimal format, or if the specified memory table entry number is out-
side the available range, the display will not be updated.
S 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 Using Direct Specification (page 207).
PC
0039
AaBb
Moji
Section 5-2
Allocated word (numeral
table entry 41)
0 0 3 9 ←0039