Analog modules
6.10 Analog input module SM 331; AI 8 x TC; (6ES7331-7PF11-0AB0)
S7-300 Automation System Module data
Manual, 08/2006, A5E00105505-04
6-89
Wiring: Thermocouple with internal compensation
With this kind of compensation, temperature in the connector reference junction is recorded
by the module.
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Figure 6-28 Wiring and block diagrams
① Thermocouple with equalizing conductor up to front connector
② Backplane bus interface
③ Analog-to-Digital Converter (ADC)
④ External cold spot comparison
Technical data
Technical data
Dimensions and weight
Dimensions W x H x D (mm) 40 x 125 x117
Weight approx. 272 g
Module-specific data
Isochronous mode supported No
Cable length
• shielded
max. 100 m
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