Mitsubishi Electric MELSEC iQ-R Series - Exchanging the Upper and Lower Bytes of 32-Bit Binary Data

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6 BASIC INSTRUCTIONS
6.7 Data Transfer Instructions
Exchanging the upper and lower bytes of 32-bit binary data
DSWAP(P)
These instructions exchange upper and lower 8-bit data in the specified device.
■Execution condition
Setting data
■Description, range, data type
■Applicable devices
*1 FX and FY cannot be used.
Processing details
• The device specified by (d) exchanges its upper and lower 8-bit data.
Operation error
There is no operation error.
• The RnCPU and RnENCPU with firmware version "17" or later support this instruction. (Use an engineering tool with version "1.020W" or later.)
Ladder ST
ENO:=DSWAP(EN,d);
ENO:=DSWAPP(EN,d);
FBD/LD
Instruction Execution condition
DSWAP
DSWAPP
Operand Description Range Data type Data type (label)
(d) Start device for storing the data whose upper and lower 8-
bit data is exchanged
 32-bit signed binary ANY32
EN Execution condition  Bit BOOL
ENO Execution result  Bit BOOL
Operand Bit Word Double word Indirect
specification
Constant Others
X, Y, M, L,
SM, F, B, SB,
FX, FY
J\ T, ST, C, D, W,
SD, SW, FD, R,
ZR, RD
U\G, J\,
U3E\(H)G
Z LT, LST,
LC
LZ K, H E $
(d) 
*1
       
RnCPU
RnENCPU
RnSFCPU RnSFCPURnPCPURnPCPU
(Standard) (Safety)
(Redundant) (Process)
(d)
EN ENO
d
(d)+1
(d)+1
∙∙∙∙∙∙ ∙∙∙∙∙∙
∙∙∙∙∙∙ ∙∙∙∙∙∙
0101010110101010
0001010111101010
(d)
(d)
∙∙∙∙∙∙ ∙∙∙∙∙∙
∙∙∙∙∙∙ ∙∙∙∙∙∙
0101010110101010
0001010111101010
b15 b4b7b8b11b12 b0b3
b15 b4b7b8b11b12 b0b3
b15 b4b7b8b11b12 b0b3
b15 b4b7b8b11b12 b0b3