Moving Blocks Of Data With The Bmov Instruction - Mitsubishi MELSEC System Q Manual

Instructions for Moving Data
6.2.3

Moving blocks of data with the BMOV instruction

The MOV instruction described in section 6.2.1 can only write single 16 or 32 bit values to a
destination. If you want, you can program multiple sequences of MOV instructions to move
contiguous blocks of data. However, it is more efficient to use the BMOV (Block MOVe) instruc-
tion, which is provided specifically for this purpose.
Ladder Diagram
³ Data source (16-bit device, first device in source range)
· Data destination (16-bit device, first device in destination range)
» Number of elements to be moved
The example above works as follows:
Data source (D10)
BMOV also has a pulse-triggered version, BMOVP (see section 6.2.1 for details on pulse-trig-
gered execution).
Blocks of bit devices: When you move blocks of bit devices with BMOV the K factors of the data
source and the data destination must always be identical.
Example
– Data source: K1M0
– Data destination: K1Y0
– Number of elements to be moved: 2
M0
M1
M2
M3
M4
M5
M6
M7
6 – 16
MELSEC Instruction List
D 10 1234
D 11
5678
D 12 -156
D 13 8765
4321
D 14
0 0 Y000
1 1 Y001
1 1 Y002
Y003
0 0
1 1 Y004
0 0 Y005
1 1
Y006
Y007
0 0
BMOV D10
D200
K5
Data destination (D200)
1234 D 200
D 201
5678
-156 D 202 5 Data registers
8765 D 203
4321 D 204
This copies 2 blocks with 4 bit
devices each.
More Advanced Programming
IEC Instruction List
BMOV_M D10, 5, D200
MITSUBISHI ELECTRIC