Mitsubishi MELSEC LJ71C24, Руководство пользователя

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App. - 47 App. - 47
APPENDIXES
(b) Data flow: Reverse direction
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 "51"
(35
H
31
H
)
"510"
(35
H
31
H
30
H
)
"5100"
(35
H
31
H
30
H
30
H
)
ASCII decimal
"12"
(31
H
32
H
)
"120"
(31
H
32
H
30
H
)
"1200"
(31
H
32
H
30
H
30
H
)
HEX 1500
H
150000
H
15000000
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 "AE"
(41
H
45
H
)
"AEF"
(41
H
45
H
46
H
)
"AEFF"
(41
H
45
H
46
H
46
H
)
ASCII decimal
"41"
(34
H
31
H
)
"415"
(34
H
31
H
35
H
)
"4155"
(35
H
35
H
31
H
34
H
)
HEX EAFF
H
EAFFFF
H
EAFFFFFF
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 "BE"
(42
H
45
H
)
"BEF"
(42
H
45
H
46
H
)
"BEFF"
(42
H
45
H
46
H
46
H
)
ASCII decimal
"51"
(35
H
31
H
)
"515"
(35
H
31
H
35
H
)
"5155"
(35
H
31
H
35
H
35
H
)
HEX EBFF
H
EBFFFF
H
EBFFFFFF
H