Siemens SIMATIC ET 200AL System Manual page 1453

Thermocouples
5.3 Compensation for the reference junction temperature
Analog module for measuring the process temperature using thermal resistor (RTD)
Configuration steps:
1. Open the project in STEP 7.
2. In the device view, select the required analog module and the corresponding channel.
3. Select the "General" tab in the Inspector window of the selected module.
4. Select the "Inputs/Measuring" area.
5. Select the "Thermal resistor (4-wire connection)" value as "Measurement type".
Figure 5-13
96
Settings for thermal resistor (RTD) type of measurement
Analog value processing
Function Manual, 06/2014, A5E03461439-AC