Specifications
4-26
4.4 Method for Specifying Data
4.4.3 Double word (32 bits) data
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
H to FFFFFFFFH
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.
Specify digits of bit data as ' '. (For a link direct
device, specify as 'J \ '. To specify
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
FXCPU
For FXCPU, the device numbers of input/output (X, Y) is assigned in octal.
Figure 4.4.3-1 Digit specification setting range of double word data (32 bits)
• K1X0 ...... 4 points of X0 to X3 • K5X0...... 20 points of X0 to X13
• K2X0 ...... 8 points of X0 to X7 • K6X0...... 24 points of X0 to X17
• K3X0 ...... 12 points of X0 to XB • K7X0...... 28 points of X0 to X1B
• K4X0 ...... 16 points of X0 to XF • K8X0...... 32 points of X0 to X1F
• K1X0 ...... 4 points of X0 to X3 • K5X0...... 20 points of X0 to X23
• K2X0 ...... 8 points of X0 to X7 • K6X0...... 24 points of X0 to X27
• K3X0 ...... 12 points of X0 to X13 • K7X0...... 28 points of X0 to X33
• K4X0 ...... 16 points of X0 to X17 • K8X0...... 32 points of X0 to X37
Number of digits
Start number of bit device
Network No.
Number of digits
Start number of bit device
X1F X1C X1B X18 X17 X14 X13 X10 XF XC XB X8 X7 X4 X3 X0
K1
specification
range
(4 points)
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)
K8 specification range
(32 points)