Omron NT21 Series, Reference Manual

Page: 81 / 466

2-3 Section Memory Tables
72
0 to 40 characters (= 0 to 40 bytes, which is 0 to 20 words)
•
Character string memory table numbers 500 and higher always remain at the
initial value set with the Support Tool. These values cannot be changed later
and can only be read. These tables cannot be allocated to the host either.
•
The characters that can be stored in character string memory tables are alpha-
numerics, symbols, and marks (codes FF20 to FFFF
H
).
Reference:
S
If 00
H
(NULL code) is encountered in a character string, the subsequent data
is ignored.
S
If codes outside the ranges indicated above are written to the allocated words
at the host, the character strings may not be displayed correctly.
S
When the PT is set to NT30/NT620 compatible mode, image and library codes
can be included in the character strings. Refer to
Appendix C for details on the
NT30/620 compatible mode.
Character string memory tables have the following properties.
Property
Possible Settings
Property
Meaning
Value
Alphanumerics and symbols, Marks
Character string in the initial status after the contents of the character
string memory table have been initialized.
Initial Check mark (initialize)/No check mark (do not initialize)
This setting determines whether or not the allocated words at the host
are initialized when the power to the PT is turned ON, when the PT is
reset, and on transition from the System Menu to the RUN mode.
Initialization here means initialization of the allocated words at the host:
when a check mark is set, the previous character string memory table
contents are written to the host words. When no check mark is set, the
data at the host is read and set in the character string memory tables.
PC
Address Any word address at the host
Address
Host word(s) to which the character string memory table is allocated
Designate the first (lower) word.
For details, refer to
Allocated words (page 72).
Words 1 to 20
The number of words used at the host when a character string memory
table is allocated to the host.
For details, refer to
Allocated words (page 72).
I/O
Comment Up to 16 characters of text
Comment
Comment that describes the contents of a character string memory table
Allocated Words
Character string memory tables can be allocated to 1 to 20 words at the host.
Character string memory tables can be allocated to the following host (PC)
areas.
Symbol C-series PCs Allocation CV-series PCs Allocation CS1-series PCs Allocation
None IR Area
f
CIO Area
f
CIO Area
f
H HR Area
f
--- --- HR Area
n
A AR Area
f
Auxiliary Area AR Area
f
L LR Area
f
--- --- LR Area
*1
n
Common Attributes
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