Mitsubishi MELSEC Q Series Programming Manual page 95

(c) When destination (D) data is a word device
The word device for the destination becomes 0 following the bit designated by digit
designation at the source.
Ladder Example
With 16-Bit Instruction
X010
MOV K1X0
Source (S) data
Fig 3.2 Ladder Example and Processing Conducted
(d) In cases where digit designation is made at the destination (D), the number of points
designated are used as the destination.
Bit devices below the number of points designated as digits do not change.
Ladder Example
When source (S) data is a numerical value
X010
MOV H1234
Destination (D)
When source (S) data is a word device
X10
MOV D0
Destination (D)
Fig 3.3 Ladder Example and Processing Conducted
(2) Using word devices
Word devices are designated in 1-point (16 bits) units.
M0
MOV K100
1. When digit designation processing is conducted, a random value can be used
for the bit device initial device number.
2. Digit designation cannot be made for the direct access I/O (DX, DY).
D0
b15
D0 0 0
H1234 0
K2M0
M15
K2M0
D0 1
K2M100
K2M100
D0
Designation of 1 point of word
device D0 (16 bits)
Processing
K1X0 X3 X2 X1 X0
Filled with 0s
b4 b3
0 0 0 0 0 0 0 0 0 0 X3
Processing
1 3
2
0 0 1 0 0 1 0 0 0 1 1 0 1 0 0
M8 M7
0 0 1 1 0 1 0 0
Not changed 3
b15 b8 b7
1 1 0 1 0 1 0 1 0 0 1 1 1 0 1
M115 M108 M107
1 0 0 1 1 1 0 1
Not changed
3
b2 b1 b0
X2 X1 X0
4
4
4
6
7
M0
4
8
b0
M100
3-5