Device Profile Area
CAN-CBX-AI420
Manual • Doc.-No.: C.3030.21 / Rev. 1.4
Page 81 of 103
7.10.4 Read Input 32-Bit (6402
h
)
Index
Subindex
Description
Value range
Default
Data type
Access
mode
6402
h
0
number_of_entries
4
4
unsigned 8
ro
1
Read_Analog_Input_32_1
80000000
h
...
7FFFFFFF
h
-
integer 32
ro
2
Read_Analog_Input_32_2
80000000
h
...
7FFFFFFF
h
-
integer 32
ro
3
Read_Analog_Input_32_3
80000000
h
...
7FFFFFFF
h
-
integer 32
ro
4
Read_Analog_Input_32_4
80000000
h
...
7FFFFFFF
h
-
integer 32
ro
Assignment of the variable Read_Analog_Input_32_x (x = 1...8):
The last digit of the name of the variable is the number of the respective analog input channel.
The data is corrected by averaging, offset, gain and if necessary addition, and then shifted left-
aligned in two’s complement representation in the 32-bit variable.
Calculation of the voltage value:
Value of the variable Read_Analog_Input_32_x
Voltage
Binary (Bit
ÉÊËËËÌ
)
Hexa-
decimal
ÉÊ
ÉÌ
ÍÎ
ÍÏ
ÍÐ
ÍÑ
ÍÒ
ÍÓ
ÍÉ
ÍÍ
ÍÊ
ÍÌ
ÊÎ
ÊÏ
ÊÐ
ÊÑ
ÊÒ
ÊÓ
ÊÉ
ÊÍ
ÊÊ
ÊÌ
Î
Ï
Ð
Ñ
Ò
Ó
É
Í
Ê
Ì
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 80000000
h
-10.0 V
: : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : :
:
:
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 FFFFFFFF
h
-4.6566 nV
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 00000000
h
0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 00000001
h
+4.6566 nV
: : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : :
:
:
0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 7FFFFFFF
h
+10.0 V
-(1 LSB
VARIABLE
)
Resolution of the measured values:
1 LSB based on the variable Read_Analog_Input_32_x (x = 1...4):
1 LSB
VARIABLE
=> 10,0 V / 8000 0000
h
=> 4.6566 nV
Note:
24-bit resolution of the A/D-converter:
1 LSB
AD-CONVERTER
=> 10 V / 80 0000
h
=> 1.19209
Ô
V
