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

3.2.3

Using double word (32 bits) data

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.
(1) When Using Bit Devices
(a) Digit designation can be used to enable a bit device to deal with double word data.
(b) In cases where digit designation has been made at the source (S) , the numeric values
Number of Digits
Designated
K1 (4 points)
K2 (8 points)
K3 (12 points)
K4 (16 points)
3.2 Designating Data
3-6
3.2.3 Using double word (32 bits) data
Digit designation of bit devices is done by designating "
Start number of bit device
Digit designation of bit devices can be done in 4-point (4-bit) units, and designation can
be made for K1 to K8.
For example, if X0 is designated for digit designation, the following points would be
designated:
• K1X0 .. The 4 points X0 to X3 are
designated
• K2X0 .. The 8 points X0 to X7 are
designated
• K3X0 .. The 12 points X0 to XB are
designated
• K4X0 .. The 16 points X0 to XF are
designated
X1F X1C X1B X18X17
Fig 3.4 Digit Designation Setting Range for 32-Bit Instructions
shown in Table 3.2 are those which can be dealt with as source data.
Table 3.2 List of Numeric Values that Can Be Dealt with as Digit Designation
With 32 bit Instructions
0 to 15
0 to 255
0 to 4095
0 to 65535
".
• K5X0...The 20 points X0 to X13 are
• K6X0...The 24 points X0 to X17 are
• K7X0...The 28 points X0 to X1B are
• K8X0...The 32 points X0 to X1F are
X14 X13 X10 XF XCXB X8X7
K4 designation range
(16 points)
K5 designation range
(20 points)
K6 designation range
(24 points)
K7 designation range
(28 points)
K8 designation range
(32 points)
Number of Digits
Designated
K5 (20 points)
K6 (24 points)
K7 (28 points)
K8 (32 points)
Number of digits
designated
designated
designated
designated
X4 X3 X0
K1
designation
range
(4 points)
K2 designation range
(8 points)
K3 designation range
(12 points)
With 32 bit Instructions
0 to 1048575
0 to 16777215
0 to 268435455
2147483648 to 2147483647