Firmware: V2.18 / V--
26.10.2022
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5.4.2 Pt1000 sensor inputs
The process images of the Pt1000 sensor inputs (for details, see chapter
Assignment of the analogue inputs
)
provide a signed 16-bit integer value that is a factor of 10 higher than the measured temperature value in °C.
For further use, this value is usually divided by 10 and assigned to a REAL variable.
The following table shows the connections:
Measured value
Value in the process image
Meaning
< -50 °C
16#8080
1)
Sensor fault
-50 °C
-500
0 °C
0
0.1 °C
1
1.6 °C
16
50 °C
500
200 °C
2000
> 200 °C
16#8080
1)
Sensor fault
1)
16#8080 = 32896
The 16-bit value range is: -32768 .. 32767. Therefore, in the
Signal List
for the Pt1000 sensor inputs,
e.g. for the sensor Pt1000_1, the value II26 and not IW26 is entered in order to record the negative
number range.
