Resistance Measurement (Potentiometer); Table 107: Setting: Resistance Measurement (Potentiometer) - Standard - WAGO 750-489 Manual

92 Process Image
4.7.7

Resistance Measurement (Potentiometer)

4.7.7.1 Standard Format
With the "Potentiometer" setting, the I/O module outputs the resistance ratio
between the slider resistance (connections +Ex/−Ex) and the overall resistance
(connections +Ex/−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 [%]
< 0.0
0.0
25.0
50.0
75.0
100.0
100.005
105
≥ 155.005
Manual
Version 1.1.0, valid from FW Version 02
Numeric Value
Binary
'1000.0000.0000.0000' 0x8000
'0000.0000.0000.0000' 0x0000
'0001.0111.1000.1000' 0x1388
'0010.0111.0001.0000' 0x2710
'0011.1010.1001.1000' 0x3A98
'0100.1110.0010.0000' 0x4E20
'0100.1110.0010.0001' 0x4E21
'0101.0010.0000.1000' 0x5208
'0111.1111.1111.1111' 0x7FFF
750-489 4AI RTD/TC/Strain Gauge Ex i
Status
Byte,
Hex. Dec.
Hex.
-32768 0x50
0
5000
10000 0x00
15000
20000
20001
0x42
21000
32767 0x60
WAGO-I/O-SYSTEM 750
Error
Range
LED
On Underflow
Off Nominal range
On Overrange
On Overflow