85
2
3
4
5
6
7
8
3.2
D
esignating Dat
a
3.2.3
U
sing doub
le wo
rd data (
32 bits)
(d) In cases where digit designation is made at the destination (D), the number of points designated are used as the
destination.
Bit devices below the number of points designated as digits do not change.
Fig 3.3 Ladder Example and Processing Conducted
(2) Using word devices
Word devices are designated in 1-point (16 bits) units.
1. When digit designation processing is conducted, a random value can be used for the bit device initial device number.
2. Digit designation cannot be made for the direct access I/O (DX, DY).
3.2.3
Using double word data (32 bits)
Double word data is 32-bit numerical data used by basic instructions and application instructions.
The two types of double word data that can be dealt with by CPU module are as follows:
• Decimal constants.............K-2147483648 to K2147483647
• Hexadecimal constants.....H00000000 to HFFFFFFFF
Word devices and bit devices designated by digit designation can be used as double word data.
For direct access input (DX) and direct access output (DY), designation of double word data is not possible by digit
designation.
Ladder Example
Processing
When source (S) data is a numerical value
When source (S) data is a word device
M1
5
M
8
0 0 1 1 0 1 0 0
M
7
M0
No
t
chan
g
e
d
K2M0
0 0 1 1 0 1 0 0
H1234 0
0
1
0
0
1
0
0
3
4
3
4
1
2
X010
MO
V
H1234
K2M0
D
est
i
nat
io
n
(D)
1
M10
7
0 0 1 1 1 0 1
M100
No
t
chan
g
e
d
K2M100
b
1
5
b8
1 0 0 1 1 1 0 1
b7
b
0
D0 1
0
0
1
1
1
0
1
M11
5
M10
8
X10
MO
V
D0
K2M100
D
est
i
nat
io
n
(D)
M0
MO
V
K100
D0
D
es
ig
nat
io
n
o
f
1
p
oi
nt
o
f
w
o
r
d
d
e
vi
ce
D0 (1
6
b
i
ts
)
