Omron CS1G/H-CPUxx-EV1 Programming Manual page 64

Basic Concepts
Data Operand
16-bit con- All binary data or
stant a limited range of
binary data
All BCD data or a
limited range of
BCD data
32-bit con- All binary data or
stant a limited range of
binary data
All BCD data or a
limited range of
BCD data
Text string Description
Text string data is stored in ASCII
(one byte except for special charac-
ters) in order from the leftmost to the
rightmost byte and from the right-
most (smallest) to the leftmost word.
00 Hex (NUL code) is stored in the
rightmost byte of the last word if
there is an odd number of charac-
ters.
0000 Hex (2 NUL codes) is stored in
the leftmost and rightmost vacant
bytes of the last word + 1 if there is
an even number of characters.
ASCII characters that can be used in a text string includes alphanumeric characters, Katakana and sym-
bols (except for special characters). The characters are shown in the following table.
28
Data form
Unsigned binary #
Signed decimal ±
Unsigned deci- & (See Note.)
mal
BCD #
Unsigned binary #
Signed binary +
Unsigned deci- & (See Note.)
mal
BCD #
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Note Unsigned decimal notation if used for the CX-Programmer only.
Symbol Range
#0000 to #FFFF
–32768 to
+32767
&0 to &65535
#0000 to #9999
#00000000 to
#FFFFFFFF
–2147483648 to
+2147483647
&0 to
&429467295
#00000000 to
#99999999
Symbol Examples
'ABCDE'
'A' 'B'
'C' 'D'
'E' NUL
41 42
43 44
45 00
'ABCD'
'A' 'B'
'C' 'D'
NUL NUL
41 42
43 44
00 00
Section 2-1
Application example
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MOV$ D00100 D00200
D00100 41 42
D00101 43 44
D00102 45 00
D00200 41 42
D00201 43 44
D00202 45 00