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K4X20
Word devices D (data register), T (timer current value), and C (counter current
value) consist of 16 bits (1 word), and data is basically transferred among the
units of one device.
Collecting 16 bit devices (such as X, Y, and M) means processing the word
device. The device numbers allocated to the bit devices must be in consecutive
order.
In the bit device, data are processed in units of four.
X2F
8
X2E
4
X2D
2
X2C
1
X2B
8
X2A
4
X29
X28
1
2
X27
8
X26
4
X25
X24
3
X23
8
X22
X21
2
X20
1
4
Number
of digits
K4 X20
K1X20
(X23 to X20)
K2X20
(X27 to X20)
K3X20
(X2B to X20)
K4X20
(X2F to X20)
K2X28
(X2F toX28)
Start number
Specify these devices to
read two-digit data "12".
Read one-digit data "4".
Read two-digit data "34".
Read three-digit data "234".
Read four-digit data "1234".
As long as four bit devices are in consecutive order, any bit device can be specified as the first.
1)2) 4)2)1)
Other bit devices can be processed in the same way as described above.
M
19
M
18
M
17
M
16
M
15
M
14
M
13
M
12
M
11
M
10
M
9
M
8
M
7
M
6
M
5
M
4
M
3
M
2
M
1
M
0
(Internal relay M)
K1M0K2M6
K3M5
* A sample program using a digital switch to import data is provided
in page App. - 46.
Applicable device
Internal device
(system or
user)
File
register
MELSECNET/
10 (H) Direct
Jn\
Index
register
Constant
Pointer
Level
Bit Word R Bit Word
Intelligent
function
module
Un\G
Z K H P I N
Digit
Number of basic
ste
p
s
S
MOV
DS
D
K1
to
K4
3