Process Image - WAGO 750 Series Manual

18 • 750-479/000-001 [2 AI DC ±10 V Differential Measurement Input/Sync]

Process Image

2.1.2.6 Process Image
The analog input module 750-479/000-001 transmits 16-bit measured values
per channel with status information as well as 8 optional status bits to the
coupler/controller.
However, accessing the status byte depends on the fieldbus system being used.
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.
The status information of the 16-bit value is mapped in bit 0 and bit 1, the
digitalized measured value in bit 2 to bit 15.
1)
Process values of module 750-479/000-001
Input voltage numerical value with status informations
±10 V
>10.0 '0111.1111.1111.11 01'
10.0 '0111.1111.1111.11 00'
7.5 '0110.0000.0000.00 00'
5.0 '0100.0000.0000.00 00'
2.5 '0010.0000.0000.00 00'
0.0 '0000.0000.0000.00 00'
-2.5 '1110.0000.0000.00 00'
-5.0 '1100.0000.0000.00 00'
-7.5 '1010.0000.0000.00 00'
-10.0 '1000.0000.0000.00 00'
<-10.0 '1000.0000.0000.00 01'
status informations: F: Error, Ü: over control
1)
binary FÜ
1)
status-
byte
hex. dec. hex.
0x7FFD 32765 0x42
0x7FFC 32764 0x00
0x6000 24576 0x00
0x4000 16384 0x00
0x2000 8192 0x00
0x0000 0 0x00
0xE000 -8192 0x00
0xC000 -16384 0x00
0xA000 -24576 0x00
0x8000 -32768 0x00
0x8001 -32767 0x41
WAGO-I/O-SYSTEM 750
LED
Error
AI 1, 2
on
off
off
off
off
off
off
off
off
off
on
I/O Modules