Thermocouples
5.3 Compensation for the reference junction temperature
Analog value processing
100
Function Manual, 06/2014, A5E03461439-AC
5.3.8
Compensation type RTD (0)
Function principle
The reference junction temperature is determined by means of the resistance value of a
Pt 1000 at the clamping unit of the M12 compensation connector. The resistance
measurement is only permitted at the X1 circular socket (channel 0). All of the module's
channels with this type of compensation receive the same reference junction temperature.
Procedure
Configuration steps:
1. Open the project in STEP 7.
2. Select the required analog module in the Device view.
3. Select the "Inputs" tab in the Inspector window of the selected module.
4. Select the "Thermocouple" value as "Measurement type" in the "Measuring" area.
5. As "Reference junction", select the value "RTD (0)".
Figure 5-17 Compensation type RTD (0)
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