Mitsubishi MELSEC QCPU Programming Manual page 73

3 CONFIGURATION OF INSTRUCTIONS
XF
(b) In cases where digit designation has been made at the source
shown in Table 3.1 are those which can be dealt with as source data.
Table 3.1 List of Numeric Values that Can Be Dealt with as Digit Designation
In cases where the source is a bit device designated by digit designation, and the
destination is a word device, the word device for the destination becomes 0 following
the bit designated by digit designation at the source.
With 16-bit instruction
X010
(c) In cases where digit designation is made at the destination
designated are used as the destination. Bit devices below the number of points designated
as digits do not change.
When source
X010
When source
X10
3 - 4
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XC XB
to to
K4 designation range
Fig 3.1 Digit Designation Setting Range for 16-Bit Instruction
Number of Digits Designated
K1 (4 points)
K2 (8 points)
K3 (12 points)
K4 (16 points)
Ladder Example
MOV K1X0 D0
Source S data
Fig 3.2 Ladder Example and Processing Conducted
Ladder Example
S data is a numerical value
MOV H1234 K2M0
Destination
S data is a word device
MOV D0 K2M100
Destination
Fig 3.3 Ladder Example and Processing Conducted
X8 X7 X4 X3
to
K1 designation
range
(4 points)
K2 designation range
(8 points)
K3 designation range
(12 points)
(16 points)
With 16-Bit Instruction
0 to 15
0 to 255
0 to 4095
-32768 to 32767
b15
D0 0 0 0 0 0 0 0 0 0 0 0 0
1
H1234 0 0 0 1
M15
K2M0
D
Do not change
b15
D0 1 1 1
M115
K2M100
D
Do not change
MELSEC-Q/QnA
X0
to
, the numeric values
S
Processing
K1X0 X3 X2 X1 X0
Become 0
b4 b3 b2 b1 b0
X3 X2 X1 X0
, the number of points
D
Processing
2 3 4
0 0 1 0 0 0 1 1 0 1 0 0
M8 M7 M0
0 0 1 1 0 1 0 0
3 4
b8 b7 b0
0 1 0 1 0 1 0 0 1 1 1 0 1
M108 M107 M100
1 0 0 1 1 1 0 1
3 - 4