Exchanging The Upper And Lower Bytes Of 16-Bit Binary Data - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

Exchanging the upper and lower bytes of 16-bit binary data

SWAP(P)
RnPCPU RnPCPU
RnCPU RnENCPU
(Process) (Redundant)
These instructions exchange upper and lower 8-bit data in the specified device.
Ladder
(d)
FBD/LD
EN ENO
d
■Execution condition
Instruction
SWAP
SWAPP
Setting data
■Description, range, data type
Operand Description
(d) Start device for storing the data whose upper and lower 8-
bit data is exchanged
EN Execution condition
ENO Execution result
■Applicable devices
Operand Bit
X, Y, M, L, J\
SM, F, B, SB,
FX, FY
 
(d)
Processing details
• The device specified by (d) exchanges its upper and lower 8-bit data.
b15 ∙∙∙ b12 b11 ∙∙∙ b8 b7 ∙∙∙ b4 b3 ∙∙∙
(d)
0 1 0 1 0 1 0 1 1 0 1 0 1 0
b15 ∙∙∙ b12 b11 ∙∙∙ b8 b7 ∙∙∙ b4 b3 ∙∙∙
(d)
1 0 1 0 1 0 1 0 0 1 0 1 0 1
Operation error
There is no operation error.
RnSFCPU RnSFCPU
(Standard) (Safety)
Execution condition
Word
T, ST, C, D, W, U\G, J\,
SD, SW, FD, R, U3E\(H)G
ZR, RD
 
b0
1 0
b0
0 1
ST
ENO:=SWAP(EN,d);
ENO:=SWAPP(EN,d);
Range Data type

16-bit signed binary
 Bit

Bit
Double word Indirect
Z LT, LST, LZ
LC
  
Data type (label)
ANY16
BOOL
BOOL
Constant Others
specification
K, H E $
    
6 BASIC INSTRUCTIONS
6.7 Data Transfer Instructions
6
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