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WAGO-I/O-SYSTEM 750
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
4.7.7
Resistance Measurement (Potentiometer)
4.7.7.1 Standard Format
With the “
Potentiometer
” setting, the I/O module outputs the resistance ratio
be
tween the slider resistance (conneEx/−Ex) and the overall resistance
(conneEx/−Ix) of the connected potentiometer. The resistance ratio is
represented in one word (16 bits) at a resolution of one digit per 0.005 %.
Table 107: Setting: Resistance Measurement (Potentiometer) – Standard Format
Percent [%]
Numeric Value
Status
Byte,
Hex.
Error
LED
Range
Binary
Hex.
Dec.
< 0.0
'1000.0000.0000.0000' 0x8000
-32768
0x50
On
Underflow
0.0
'0000.0000.0000.0000' 0x0000
0
0x00
Off
Nominal range
25.0
'0001.0111.1000.1000' 0x1388
5000
50.0
'0010.0111.0001.0000' 0x2710
10000
75.0
'0011.1010.1001.1000' 0x3A98
15000
100.0
'0100.1110.0010.0000' 0x4E20
20000
100.005 '0100.1110.0010.0001' 0x4E21
20001
0x42
On
Overrange
105
'0101.0010.0000.1000' 0x5208
21000
≥ 155.005
'0111.1111.1111.1111' 0x7FFF
32767
0x60
On
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