Mitsubishi MELSEC LJ71C24, Руководство пользователя

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App. - 51 App. - 51
APPENDIXES
(c) Data flow: Byte swap
1) "Complement calculation" is 'No complement calculation'
(1FD
H
in hexadecimal is 509 in decimal)
Data length
Code type
1 byte 2 bytes 3 bytes 4 bytes
ASCII
hexadecimal "10DF"
(31
H
30
H
44
H
46
H
)
ASCII decimal
"5090"
(35
H
30
H
39
H
30
H
)
HEX 0000FD01
H
2) "Complement calculation" is 'One's complement'
(One's complement of 0000 01FD
H
is FFFF FE02
H
)
When "Code type" is 'ASCII decimal', the last one word is extracted
and converted from hexadecimal to decimal.
(FF02
H
in hexadecimal is 65026 in decimal)
Data length
Code type
1 byte 2 bytes 3 bytes 4 bytes
ASCII
hexadecimal "EF20"
(45
H
46
H
32
H
30
H
)
ASCII decimal
"0562"
(30
H
35
H
36
H
32
H
)
HEX FFFF02FE
H
3) "Complement calculation" is 'Two's complement'
(Two's complement of 0000 01FD
H
is FFFF FE03
H
)
When "Code type" is 'ASCII decimal', the last one word is extracted
and converted from hexadecimal to decimal.
(FE03
H
in hexadecimal is 65027 in decimal)
Data length
Code type
1 byte 2 bytes 3 bytes 4 bytes
ASCII
hexadecimal "EF30"
(45
H
46
H
33
H
30
H
)
ASCII decimal
"0572"
(30
H
35
H
37
H
32
H
)
HEX FFFF03FE
H