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Chapt er 8 CI P O bj ec t
8 - 5
8_
8.2
Data Type
This section will provide an overview of the supported data types by objects.
Data Type
Description
BOOL
False(16#00) or True(16#01)
SIGNED
INTEGER
SINT(1 byte), INT(2 bytes), DINT(4 bytes), LINT(8 bytes)
Number
1st
2nd
3rd
4th
5th
6th
7th
8th
SINT
0LSB
INT
0LSB
1LSB
DINT
0LSB
1LSB
2LSB
3LSB
LINT
0LSB
1LSB
2LSB
3LSB
4LSB
5LSB
6LSB
7LSB
Ex: DINT value = 16#12345678
Number
1st
2nd
3rd
4th
DINT
78
56
34
12
UNSIGNED
INTEGER
USINT(1 byte), UINT(2 bytes), UDINT(4 bytes), ULINT(8 bytes)
Ex: UDINT value = 16#AABBCCDD
Number
1st
2nd
3rd
4th
UDINT
DD
CC
BB
AA
STRING
ASCII CODES, 1 or 2 bytes/words
STRING: 2 bytes character count + 1 byte character
Contents (Charcount)
Contents (String contents)
STRING
04
00
4D
69
6C
6C
STRING2: 2 bytes character count + 2 byte character
Contents (Charcount)
Contents (String contents)
STRING2
04
00
4D
00
69
00
6C
00
6C
00
SHORT_STRING: 1 bytes character count + 1 byte character
Contents (Charcount)
Contents (String contents)
STRING
04
4D
69
6C
6C
Fixed LENGTH
BIT STRING
BYTE (1 byte), WORD (2 bytes), DWORD (4 bytes), LWORD (8 bytes)
1st
2nd
3rd
4th
5th
6th
7th
8th
Byte
7…0
WORD
7…0
15…8
DWORD 7…0
15…8
23…16
31…24
LWORD
7…0
15…8
23…16
31…24
39…32
47…40
55…48
63…56