C14/C16
Data area
Index
modifier
Constant
Item Name and Function
Numbering
C24/C40 C56/C72
Symbol
256
words
DT0
to
DT255
70 words
(DT9000 to DT9069)
One word each
(No numbering system)
16-bit constant (word):
K-32,768 to K32,767
32-bit constant (double word):
K-2,147,483,648 to
K2,147,483,647
16-bit constant (word):
H0 to HFFFF
32-bit constant (double word):
H0 to HFFFFFFFF
DT (word)
DT (word)
IX (word)
IY (word)
K
H
1,660
words
DT0
to
DT1659
6,144
words
DT0
to
DT6143
Data register
The data register is a memory area for data processed
within the programmable controllers and each data
register consists of 1 word (1 word = 16 bits).
Special data register
The special data register is a memory area that has
special applications. Refer to page 226, “8-4. Table of
Special Data Registers” for details about the special data
register.
Index register
The index register can be used as an address and
constants modifier. Refer to page 193, “2. How to Use
Index Registers (IX, IY)”.
Decimal constants
Hexadecimal constants
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