26
Process Image
WAGO-I/O-SYSTEM 750
750-476 2AI ±10V DC S.E.
Manual
Version 1.1.0
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4
Process Image
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Mapping of process data in the process image of fieldbus systems
The representation of the I/O modules’ process data in the process image depends
on the fieldbus coupler/controller used. Please take this information as well as the
particular design of the respective control/status bytes from the section “Fieldbus
Specific Design of the Process Data” included in the description concerning the
process image of the fieldbus coupler/controller used.
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4.1
Standard Format
For the 750-476 I/O module, the input voltage range
of −10
V … +10 V is scaled
to the numerical range of 0x8000 … 0x7FFF.
Table 15: Process Image
Input voltage ±10 V
Numeric value
Status
Byte
Hex.
LED
Error
AI 1, 2
Binary
Measured value
Hex.
Dec.
<-11.0
’1000.0000.0000.0000’
0x8000
-32768
0x41
ON
<-10.5
’1000.0000.0000.0000’
0x8000
-32768
0x41
OFF
-10.0
’1000.0000.0000.0000’
0x8000
-32768
0x00
OFF
-7.5
’1010.0000.0000.0000’
0xA000
-24576
0x00
OFF
-5.0
’1100.0000.0000.0000’
0xC000
-16384
0x00
OFF
-2.5
’1110.0000.0000.0000’
0xE000
-8192
0x00
OFF
0.0
’0000.0000.0000.0000’
0x0000
0
0x00
OFF
2.5
’0001.0000.0000.0000’
0x2000
8192
0x00
OFF
5.0
’0100.0000.0000.0000’
0x4000
16384
0x00
OFF
7.5
’0110.0000.00000000’
0x6000
24576
0x00
OFF
10.0
’0111.1111.1111.1111’
0x7FFF
32767
0x00
OFF
>10.5
’0111.1111.1111.1111’
0x7FFF
32767
0x42
OFF
>11.0
’0111.1111.1111.1111’
0x7FFF
32767
0x42
ON
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