Character String Display - Omron NT31C Reference Manual

Character String Display

2-9 Character String Display
Function Outline
a b c d
Reference: When the PT is in NT30/620 compatible mode, image and library codes can be
Restrictions
138
The contents of character string memory tables are displayed as character
strings.
Alphanumerics and symbols can be displayed. It is also possible to display
marks (character codes FF20 to FFFF
There are two methods for referencing a character string memory table whose
contents are to be displayed, as follows.
• Direct reference (reference of the number of the relevant character string
memory table)
PT
Character string
memory table
No. 51
a b c d
Direct
reference
• Indirect reference (reference of the numeral memory table that stores the num-
ber of the relevant character string memory table)
PT
a b c d
included in character string memory tables. An image or library might extend be-
yond the edge of the PT's screen when it is displayed by changing the contents of
a character string memory table within a character string display. Refer to Appen-
dix C for details on the NT30/620 compatible mode (page 441).
• A maximum of 256 character string displays can be registered for one screen.
(Same for window screen.) For an overlapping screen comprising 8 child
screens, the maximum is 1,024.
There is no restriction on the number of character string displays that can be
registered for one screen data file: any number can be registered as long as
the data file capacity is not exceeded. However, if a large number of elements
are registered, check that the restrictions on element display are complied with
by referring to Display Restrictions (page 425).
• The maximum number of character string display which can be displayed us-
ing indirect reference is 100 per screen combined with the number of numeral
display which is displayed using indirect reference.
(Same restriction applies to overlapping screens or when displaying window
screens.)
• The following numbers of characters can be displayed in one character string
display, depending on the scale.
) in character strings.
H
PC
Allocated word
(character string memory table No. 51)
DM0100
6 1 6 2
6 3 6 4
PC
Allocated word
Numeral memory
(numeral memory table No. 20)
table No. 20
DM0000
0 0 5 1 0 0 5 1
Indirect
reference
DM0100
6 1 6 2
a b c d
6 3 6 4
Character string
memory table No. 51 Allocated word
(character string memory
table No. 51)
Section 2-9