Double Word (32 Bits) Data - Mitsubishi Electric MELSEC Q Series Structured 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 digits of bit devices, double word data can be used.
4.4 Method for Specifying Data
4-26
4.4.3 Double word (32 bits) data
Specify digits of bit data as '
device, specify as 'J
Network No. Number of digits
X100 to X11F of Network No.2, specify as J2\K8X100.)
Digits 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 digits are specified for X0.
QCPU (Q mode)/LCPU
• 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
FXCPU
For FXCPU, the device numbers of input/output (X, Y) is assigned in octal.
• K1X0 ...... 4 points of X0 to X3
• K2X0 ...... 8 points of X0 to X7
• K3X0 ...... 12 points of X0 to X13
• K4X0 ...... 16 points of X0 to X17
X1F X1C X1B X18 X17
Figure 4.4.3-1 Digit specification setting range of double word data (32 bits)
to FFFFFFFF
H H
Number of digits 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
• K5X0...... 20 points of X0 to X23
• K6X0...... 24 points of X0 to X27
• K7X0...... 28 points of X0 to X33
• K8X0...... 32 points of X0 to X37
X14 X13 X10 XF XC XB
K3 specification range
K4 specification range
(16 points)
K5 specification range
(20 points)
K6 specification range
(24 points)
K7 specification range
(28 points)
K8 specification range
(32 points)
'. (For a link direct
'. To specify
X8 X7 X4 X3 X0
K1
specification
range
(4 points)
K2 specification
range
(8 points)
(12 points)