Upper And Lower Byte Exchanges (Swap(P)) - Mitsubishi MELSEC Q Series Programming Manual

6.4.11

Upper and lower byte exchanges (SWAP(P))

SWAP(P)
SWAP
SWAPP
Setting
Data
D
Function
(1) Exchanges the higher and lower 8 bits of the device designated by
Operation Error
(1) There are no operation errors associated with 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
R10 0
b15
R10 1
Command
Command
: Head number of the devices where the data is stored (BIN 16 bits)
D
Internal Devices
R, ZR
Bit Word
b15 b12 b11
D
0 1 0 1 0 1 0 1
b15 b12 b11
D
1 0 1 0 1
b12 b11 b8 b7 b4 b3 b0
0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
b12 b11 b8 b7 b4 b3 b0
1 1 1 1 1 1 1 0 0 0 0 0 0 0 0
High
Basic
performance
J \
U \G
Bit Word
b8 b7 b4 b3 b0
1 0 1 0 1 0 1 0
b8 b7 b4 b3 b0
0 1 0 0 1 0 1 0 1 0 1
[List Mode]
Step Instruction
SWAP(P)
Process
Redundant Universal LCPU
SWAP D
SWAPP D
Zn Constants Other
––
.
D
Device
6-131
1
2
3
4
4
6
7
8