7-3
Section
Character String Memory Table (String Table)
283
By clicking the
,
, or
Button, you can insert
mark data, image data, or library data into a character string. (With the NT21 and
NT31/631 without NT20/30/620-compatible mode,
and
are not enabled.)
Initial
Specify whether or not the contents of the character string memory table entry
(string table) are written to the allocated words in the host when the PT is
switched on or reset, or the mode is changed from the System Menu to RUN.
The term “initialize” means the processing to initialize the content of words in the
host with the content in a character string memory table entry (string table). The
setting for [Initial] is not valid if a character string memory table entry (string table)
is not allocated to a host word.
To make [Initial] valid, click on the check box to display a cross mark (
) in the
box. If the box is clicked on while it is in the valid state, [Initial] is made invalid.
Reference: The content of character string memory table entries (string table) at the start of
PT operation is as shown below according to whether or not a character string
memory table entry (string table) is allocated to the host, the [Initial] setting for the
character string memory table entry (string table), and whether or not the resume
function is used.
Allocation to
[Initial]
[Initial] setting
Allocation to
Host
[Initial]
setting
Used
Not Used
Allocated
Initialized
(valid)
Existing character string
memory table (string
table) content retained
(also for the word in the
host)
Initial value of the char-
acter string memory table
entry (string table)
(also for the word in the
host)
Content of the character string memory table entry
(string table) if it is initialized by System Menu opera-
tion
(also for the word in the host)
Not initialized
(invalid)
Content of a word in the host
Not allocated
(Invalid)
Existing character string
memory table (string
table) content retained
Initial value of the char-
acter string memory table
entry (string table)
Content of the character string memory table entry
(string table) if it is initialized by System Menu opera-
tion
Words
Specify the number of words in the PC (PLC) to be allocated to the character
string memory table entry (string table).
The number of allocated words varies depending on the PT model as shown be-
low.
PT Model
No. of Allocated Words
NT11S/NT11
1 to 10 words (1 to 20 characters)
NT20, NT20S
1 to 16 words (1 to 32 characters)
NT30, NT30S, NT21, NT31, NT31C, NT600S,
NT620S, NT620C, NT625C, NT631, NT631C
1 to 20 words (1 to 40 characters)