Siemens SIMATIC S7 System Manual page 159

Thermocouple
Depending upon the thermocouple type that you select, you can configure the following
thermocouples for the channel:
● Type B (PtRh-PtRh)
● Type N (NiCrSi-NiSi)
● Type E (NiCr-CuNi)
● Type R (PtRh-Pt)
● Type S (PtRh-Pt)
● Type J (Fe-CuNi)
● Type T (Cu-CuNi)
● Type K (NiCr-Ni)
● Type C (W5Re-W26Re)
● TXK/XK (TXK/XK(L))
Scale
You configure a temperature scale for the channel, choosing one of the following options:
● Celsius
● Fahrenheit
Rejection
Fluctuations in thermocouple analog input values can also be caused by the response time
of the sensor, or the length and condition of the wires carrying the thermocouple analog
signal to the module. In such cases, the fluctuating values could be changing too rapidly for
the program logic to respond effectively. You can configure the TC analog input module to
reject signals to eliminate or minimize noise at the following frequencies:
● 10 Hz
● 50 Hz
● 60 Hz
● 400 Hz
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
6.1 Configuring the operation of the PLC system
PLC device configuration
159