Character String Display - Omron NT21 Reference Manual

Character String Display

2-9

Character String Display

Function Outline
a b c d
Reference: When the PT is in NT20S or NT30/620 compatible mode, image and library
Restrictions
148
The contents of character string memory table entries are displayed as charac-
ter 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 entry
whose contents are to be displayed, as follows:
Direct reference (reference of the number of the relevant character string
memory table entry)
PT
Character string
memory table
entry 51
a b c d
Direct
reference
Indirect reference (reference of the numeral memory table entry that stores the
number of the relevant character string memory table entry)
PT
a b c d
codes can be included in character string memory table entries. An image or li-
brary display might extend beyond the edge of the PT's screen when it is dis-
played by changing the contents of a character string memory table entry within a
character string display. Refer to Appendix C for details on the NT20S and
NT30/620 compatible modes (page 451).
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 431).
The maximum number of character string display that can be displayed using
indirect reference is 100 per screen combined with the number of numeral dis-
play that 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 entry 51)
DM0100
6 1 6 2
6 3 6 4
PC
Allocated word
Numeral memory
(numeral memory table entry 20)
table entry 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
Allocated word
memory table entry 51
(character string memory
table entry 51)
Section 2-9