Thermocouples
5.3 Compensation for the reference junction temperature
Analog value processing
Function Manual, 06/2014, A5E03461439-AC
91
Compensation with fixed reference temperature
Function principle
With this type of compensation, the reference junction temperature is stored in the module
as fixed value.
Configuration steps:
1. Open the project in STEP 7.
2. Select the required analog module in the Device view.
3. Select the "General" tab in the Inspector window of the selected module.
4. Select the "Inputs/Measuring" area.
5. Select the "Thermocouple" value as "Measurement type".
6. As "Reference junction", select the value "Fixed reference temperature".
7. Specify the temperature of the reference junction in the "Fixed reference temperature"
area, for example, 20 °C.
Figure 5-9 Fixed reference temperature
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