Aventics 2AI2M12-E Description Du Système Et Notice D'emploi page 92

AVENTICS | AES I/O Modules, Analog | R412018147–BAL–001–AG
92
Structure of the I/O Module Data
6.3.2.4 Process data of the inputs for "16 bits direct" data format
Input values 0–65535 have to be converted corresponding to the selected measurement range.
Table 24: Structure of the process data of the inputs for "16 bits direct" data format (2AI2M12E)
Bit Bit Bit Bit
15 14 13 12
D15 D14 D13 D12
D.. : Value of the bit (0/1)
Table 25: Value ranges of the process data of the inputs for "16 bits direct" data format (2AI2M12E)
Nominal value of the
measurement range
to
0 10 V 0.15625 mV/bit
to
0 20 mA
±10 V 0.3125 mV/bit
±20 mA
to
2 10 V 0.1221 mV/bit
to
4 20 mA
D.. : Value of the bit (0/1)
1)
In this operating mode, monitoring for a wire break is not possible (see "6.2 Diagnostic data" on page 86).
Bit Bit Bit Bit
11 10 9 8
D11 D10 D9 D8
Resolution
Value
0 V
0.156 mV
10.24 V
0.3125 μA/bit 0 mA
0.312 μA
20.48 mA
-10.24 V
0 V
10.24 V
0.625 μA/bit -20.4 mA
0 mA
20.48 mA
0 V
2 V
2.000122 V
10.24 V
0.2441 μA/bit 0 mA
4 mA
4.000244 mA
20.48 mA
Bit Bit Bit Bit Bit
7 6 5 4 3
D7 D6 D5 D4 D3
Example
D0–D15
Decimal
0
1
65535
0
1
65535
0
32767
65535
0
32767
65535
1)
0
0
1
65535
1)
0
0
1
65535
Bit Bit Bit
2 1 0
D2 D1 D0
D0–D15
Hexadecimal
0000
0001
FFFF
0000
0001
FFFF
0000
7FFF
FFFF
0000
7FFF
FFFF
1)
0000
0000
0001
FFFF
1)
0000
0000
0001
FFFF