Analog input module SM 331; AI 6 x TC Isolated (6ES7331‑7PE10‑0AB0)
A5E02398493-02, 11/2008
3
Wiring: Thermocouple with internal compensation
With this type of compensation, the module registers the temperature of the reference junction at the connector.
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① Thermocouple with thermocouple expansion wire up to front connector
② Backplane bus interface
③ Analog-to-Digital Converter (ADC)
④ External cold junction comparison (ADC and current source)
Figure Internal Compensation
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