Mitsubishi MELSEC LJ71C24, User Manual

Page: 377 / 428

App. - 48 App. - 48
APPENDIXES
(c) Data flow: Byte swap
1) "Complement calculation" is 'No complement calculation'
(15
H
in hexadecimal is 21 in decimal)
Data length
Code type
1 byte 2 bytes 3 bytes 4 bytes
ASCII
hexadecimal "0051"
(30
H
30
H
35
H
31
H
)
ASCII decimal
"0012"
(30
H
30
H
31
H
32
H
)
HEX 00001500
H
2) "Complement calculation" is 'One's complement'
(One's complement of 0000 0015
H
is FFFF FFEA
H
)
When "Code type" is 'ASCII decimal', the last one word is extracted
and converted from hexadecimal to decimal.
(FFEA
H
in hexadecimal is 65514 in decimal)
Data length
Code type
1 byte 2 bytes 3 bytes 4 bytes
ASCII
hexadecimal "FFAE"
(46
H
46
H
41
H
45
H
)
ASCII decimal
"5541"
(35
H
35
H
34
H
31
H
)
HEX FFFFEAFF
H
3) "Complement calculation" is 'Two's complement'
(Two's complement of 0000 0015
H
is FFFF FFEB
H
)
When "Code type" is 'ASCII decimal', the last one word is extracted
and converted from hexadecimal to decimal.
(FFEB
H
in hexadecimal is 65515 in decimal)
Data length
Code type
1 byte 2 bytes 3 bytes 4 bytes
ASCII
hexadecimal "FFBE"
(46
H
46
H
42
H
45
H
)
ASCII decimal
"5551"
(35
H
35
H
35
H
31
H
)
HEX FFFFEBFF
H