Mitsubishi MELSEC Q Series, Programming Manual

Page: 66 / 816

3-10
3.4 Method for Specifying Data
3.4.2 Word (16 bits) data
(c) When the destination is a word device
For the word device at the destination side, 0s are stored to bits starting from the digit
specified at the source.
Figure 3.4.2-2 Ladder example and processing details
(d) When a digit is specified at the destination , the points by the specified digit are the
target of destination.
Bit devices following the points by the specified digit are not changed.
Figure 3.4.2-3 Ladder example and processing details
(2) Using word devices
A word device is specified in unit of one point (16 bits).
1. When performing the process with a digit specification, a desired value can be
used for the start device number of bit devices.
2. Digits cannot be specified for direct access inputs/outputs (DX, DY).
Ladder example Processing
Instruction that processes 16-bit data
Ladder example Processing
When the source is a numeric value
When the source is a word device
0 0 X 3
b 0
D0
K1X 0
b1 b2 b 3
0 0 0 0 0 0 0 0 0 0 X2 X1 X 0
0s are stored
X 3 X2 X1 X 0
b15 b4
X 0 1 0
MOV
EN ENO
d s D0 K 1X 0
Source s
d
s
M 15 M8
0 0 1 1 0 1 0 0
M7
M0
N ot c h anged
K2 M0
0 0 1 1 0 1 0 0 H12 3 4 0 0 1 0 0 1 0 0
3 4
3 4 1 2
X 0 1 0
MOV
EN EN O
d s K2 M0 H12 3 4
Dest i nat i on
d
s
1
M 1 07
0 0
1 1 1
0
1
M 1 00
N ot c h anged
K2 M 1 00
b15 b 8
1 0 0 1 1 1 0 1
b 7 b 0
D0 1 0 0 1 1 1 0 1
M 115 M 1 08
X 0 1 0
MOV
EN ENO
d s K 2 M 1 00 D0
Destination d
X 0 1 0
MOV
EN ENO
d s D0 1 00
One p oint ( 16 b its) o f D0
is t h e target w ord device