Data type – Festo Контроллеры двигателя SFC-LAC User Manual
Page 375
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C. Object directory DS402 and CI
C−49
Festo GDCP−SFC−LACI−CO−EN en 0812NH
Data type
The transmitted value (1, 2 or 4 data bytes as hex number)
depends on the data type of the object to be read or written.
The following data types are supported:
Type
Hex
Format
UINT8
2H
8 bits without sign: 0...255
INT8
8 bits with sign: −128 ... 127
UINT16
4H
16 bits without sign: 0 ... 65535
INT16
16 bits with sign: −32768 ... 32767
UINT32
8H
32 bits without sign: 0 ... (2
32
− 1)
INT32
32 bits with sign: −2
31
... +(2
31
− 1)
V−string
Corresponds to the preset string
Tab. C/4: Data types
All values are transferred in hexadecimal digits; one character
represents 4 bits; and is known as a tetrad <Tn>. The first tet−
rad transferred contains the higher−value bits of the value.
Generally: Tetrad <Tn> contains the bits b
n
...b
n+3
Example: UINT8
Dec
26
Hex
1
A
Bin
0
0
0
1
1
0
1
0
b
7
b
6
b
5
b
4
b
3
b
2
b
1
b
0
Tetrad T
4
Tetrad T
0