Double Word (32 Bits) Data - Mitsubishi MELSEC-Q Series Programming Manual

4.4.3

Double word (32 bits) data

Double word data are 32-bit numeric value data used in basic instructions and application
instructions.
The following shows the two types of double word data that can be handled in CPU modules.
• Decimal constants ................ -2147483648 to 2147483647
• Hexadecimal constants ........ 00000000
For double word data, word devices and digit specification for bit devices can be used.
Note that double word data cannot be specified using digit specification for direct access inputs
(DX) and direct access outputs (DY).
(1) Using bit devices
(a) By specifying a digit for bit devices, double word data can be used.
Specify a digit for bit data as '
device, specify as 'J
X100 to X11F of Network No.2, specify as J2\K8X100.)
A digit cannot be specified in the range from K1 to K8 in unit of 4 points (4 bits).
The following are the examples of the target points when a digit is specified for X0.
• K1X0 ...... 4 points of X0 to X3
• K2X0 ...... 8 points of X0 to X7
• K3X0 ...... 12 points of X0 to XB
• K4X0 ...... 16 points of X0 to XF
X1F
Figure 4.4.3-1 Digit specification setting range of double word data (32 bits)
(b) The following table shows the numeric values that can be used as source data when a
digit is specified at the source
Number of
specified digits
K1 (4 points)
K2 (8 points)
K3 (12 points)
K4 (16 points)
H
Number of digits
\
Network No. Number of digits
X1C X1B X18 X17 X14 X13
K8 specification range
.
s
Table 4.4.3-1 List of digit specification and numeric values that can be used
Value range
0 to 15 K5 (20 points)
0 to 255
K6 (24 points)
0 to 4095
K7 (28 points)
0 to 65535 K8 (32 points)
to FFFFFFFF
H
Start number of bit device
Start number of bit device
• K5X0.......20 points of X0 to X13
• K6X0.......24 points of X0 to X17
• K7X0.......28 points of X0 to X1B
• K8X0.......32 points of X0 to X1F
X10 XF XC XB X8 X7 X4 X3
K2 specification
range
(8 points)
K3 specification range
(12 points)
K4 specification range
(16 points)
K5 specification range
(20 points)
K6 specification range
(24 points)
K7 specification range
(28 points)
(32 points)
Number of specified
digits
−2147483648 to 2147483647
4.4 Method for Specifying Data
4.4.3 Double word (32 bits) data
'. (For a link direct
'. To specify
X0
K1
specification
range
(4 points)
Value range
0 to 1048575
0 to 16777215
0 to 268435455
4-25
4