Swap, Swapp - Mitsubishi MELSEC-Q/L Programming Manual

6.4.11

SWAP, SWAPP

Upper and lower byte exchanges
6.4.11
SWAP, SWAPP
SWAP
SWAPP
: Head number of the devices where the data is stored (BIN 16 bits)
D
Setting Internal Devices
Data
Bit Word
D
Function
(1) Exchanges the higher and lower 8 bits of the device designated by
Operation Error
(1) There is no operation error in the SWAP(P) instruction.
Program Example
(1) The following program exchanges the higher 8 bits and lower 8 bits of R10 when X10 goes ON.
[Ladder Mode]
[Operation]
b15 b12 b11 b8 b7
R10 0 0 0 0 0 0 0 0 1 1 1 1
b15 b12 b11 b8 b7
R10 1 1 1 1 1 1 1 1 0 0 0
Command
Command
J
R, ZR
Bit
b15 b12
D
0 1 0 1
b15 b12
D
1 0 1 0
[List Mode]
Step
b4 b3 b0
1 1 1 1
b4 b3 b0
0 0 0 0 0
High
Basic
performance
\
U \G
Word
.
D
b11 b8 b7 b4 b3 b0
0 1 0 1 1 0 1 0 1 0 1 0
b11 b8 b7 b4 b3 b0
1 0 1 0 0 1 0 1 0 1 0 1
Device
Instruction
SWAP, SWAPP
Process LCPU
Redundant Universal
SWAP D
SWAPP D
Zn Constants Other
––
1
2
3
4
6
7
8
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