Siemens SIMATIC S7-1500 Manual page 28

Parameters/address space
4.3 Declaration of parameters
Current limit for wire break diagnostics
Threshold for reporting wire breaks. The value can be set to 1.185 mA or 3.6 mA, depending
on the sensor used.
Temperature coefficient
The temperature coefficient depends on the chemical composition of the material. In Europe,
only one value is used per sensor type (default value).
The temperature coefficient (α value) indicates by how much the resistance of a specific
material changes relatively if the temperature increases by 1 °C.
The further values facilitate a sensor-specific setting of the temperature coefficient and
enhance accuracy.
Interference frequency suppression
At analog input modules, this suppresses interference caused by the frequency of the AC
network.
The frequency of the AC network may corrupt measurements, particularly in the low voltage
ranges and when thermocouples are being used. For this parameter, the user defines the
mains frequency prevailing on his system.
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Analog input module AI 8xU/I/RTD/TC ST (6ES7531-7KF00-0AB0)
Manual, 09/2016, A5E03484864-AD