Siemens SIMATIC ET 200AL System Manual page 645

Representation of analog values
B.3 Representation of analog values for resistance-based sensors
B.3 Representation of analog values for resistance-based sensors
Resistance-based sensor
Table B- 3 Resistance-based sensor of 150 Ω and 300 Ω
Values
Dec. Hex.
32767 7FFF
32511 7EFF
27649 6C01
27648 6C00
20736 5100
1 1
0 0
-1 FFFF
: :
-4864 ED00
-32768 8000
If the sensors are not connected correctly
1
48
Resistance-based sensor range
150 Ω 300 Ω
>176.38 Ω >352.77 Ω
176.38 Ω 352.77 Ω
150 Ω 300 Ω
112.5 Ω 225 Ω
5.43 mΩ 10.85 mΩ
0 Ω 0 Ω
(negative values are physically impossible)
Analog input module AI 4xU/I/RTD 4xM12 (6ES7144-5KD00-0BA0)
Range
Overflow
Overrange
Nominal range
Underrange
1
Underflow
1
Equipment Manual, 08/2021, A5E32350124-AG