7-3
Section
Character String Memory Table (String Table)
284
One word corresponds to 2 characters.
A character string is allocated to the PC (PLC) words in units of 2 characters, be-
ginning with the leftmost character, from lower digit words to higher digit words.
The data type is 1-byte or 2-byte.
Note
If the number of characters in a character string memory table entry (string table)
is larger than the number of words used, the number of characters equal to the
number of specified words is sent to the PC (PLC) beginning with the start of the
character string.
ABCDEFG
AB
If setting is 2 words.
Words allocated in PC (PLC)
Character string memory table
(String table)
If setting is 4 words.
HIJKLMN
JK
HI
CD
LM
N
* EFG is not sent.
The character string is sent in units of 2
characters, beginning with the leftmost
character in the character string, and
allocated to words from lower word to
higher word.
00 (hexadecimal) is entered in blank
areas.
PLC Address
Specify the PC (PLC) address (start address) of the area where character string
memory table entries (string table) are allocated.
I/O Comment
Specify a comment for a PC (PLC) word.
A comment can comprise up to 16 characters.
Ref
Displays whether the table entry with the specified number is already used or not.
Yes:
Already used as an element.
No:
Not used.
If the indication is Yes, you can check where the table entry in question is used by
clicking on
. Note that this operation is not possible when setting a
character string memory table entry (string table) from the property dialog box of
an element.
(For details of
, refer to 7-1-1 Reference Operation.)
7-3-4 Inserting Mark Data into a Character String
To insert mark data into an initial value, follow the steps described below.
(1) After specifying the Value field, move the cursor to the position where the
mark data is to be inserted.
(2) Click on
.
The Show Mark dialog box is displayed.
(3) Specify the mark data in the list of mark data.
(4) Click on
.
