Mitsubishi MELSEC LJ71C24, Руководство пользователя

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App. - 46 App. - 46
APPENDIXES
(a) Data flow: Forward 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 "5"
(35
H
)
"15"
(31
H
35
H
)
"015"
(30
H
31
H
35
H
)
"0015"
(30
H
30
H
31
H
35
H
)
ASCII decimal
"1"
(31
H
)
"21"
(32
H
31
H
)
"021"
(30
H
32
H
31
H
)
"0021"
(30
H
30
H
32
H
31
H
)
HEX 15
H
0015
H
000015
H
00000015
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 "A"
(41
H
)
"EA"
(45
H
41
H
)
"FEA"
(46
H
45
H
41
H
)
"FFEA"
(46
H
46
H
45
H
41
H
)
ASCII decimal
"4"
(34
H
)
"14"
(31
H
34
H
)
"514"
(35
H
31
H
34
H
)
"5514"
(35
H
35
H
31
H
34
H
)
HEX EA
H
FFEA
H
FFFFEA
H
FFFFFFEA
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 "B"
(42
H
)
"EB"
(45
H
42
H
)
"FEB"
(46
H
45
H
42
H
)
"FFEB"
(46
H
46
H
45
H
42
H
)
ASCII decimal
"5"
(35
H
)
"15"
(31
H
35
H
)
"515"
(35
H
31
H
35
H
)
"5515"
(35
H
35
H
31
H
35
H
)
HEX EB
H
FFEB
H
FFFFEB
H
FFFFFFEB
H