WAGO 750 Series Manual page 12

12 • 750-479 [2 AI DC ±10 V, Differential Measurement Input]
Process Image
Some fieldbus systems can process input channel status information by means
of a status byte.
This status byte can be displayed via the starting tool WAGO-I/O-CHECK 2.
However, processing via the coupler / controller is optional, which means that
accessing or parsing the status information depends on the fieldbus system.
Attention
The representation of the process data of some I/O modules or their
variations 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 corresponding coupler/controller.
For the standard module 750-479, the input voltage ranging from -10 V to
+10 V is scaled on the numerical values ranging from 0x8000 to 0x7FFF.
Process values of module 750-479
Input voltage
±10 V
<-11.0 <'1000.0000.0000.00XX'
<-10.0 <'1000.0000.0000.00XX'
-10.0 '1000.0000.0000.00XX'
-7.5 '1010.0000.0000.00XX'
-5.0 '1100.0000.0000.00XX'
-2.5 '1110.0000.0000.00XX'
0.0 '0000.0000.0000.00XX'
2.5 '0010.0000.0000.00XX'
5.0 '0100.0000.0000.00XX'
7.5 '0110.0000.0000.00XX'
10.0 '0111.1111.1111.11XX'
>10.0 >'0111.1111.1111.11111'
>11.0 >'0111.1111.1111.1111'
numerical value
binary hex.
<0x8000
<0x8000
0x8000
0xA000
0xC000
0xE000
0x0000
0x2000
0x4000
0x6000
0x7FFC
>0x7FFF
>0x7FFF
status LED
- Error
byte
dec. hex. AI 1, 2
<-32768 0x41 on
<-32768 0x00 off
-32768 0x00 off
-24576 0x00 off
-16384 0x00 off
-8192 0x00 off
0 0x00 off
8192 0x00 off
16384 0x00 off
24576 0x00 off
32764 0x00 off
>32767 0x00 off
>32767 0x42 on
WAGO-I/O-SYSTEM 750
I/O Modules