Analog modules
6.3 Analog input module SM 331; AI 8 x 16 Bit; (6ES7331-7NF00-0AB0)
S7-300 Automation System Module data
6-10 Manual, 08/2006, A5E00105505-04
Wiring: 2 and 4-wire measuring transducer
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Figure 6-2 Wiring and block diagrams
① Backplane bus interface
② Electrical isolation
③ Analog-to-Digital Converter (ADC)
④ Channel 0 for 4-wire transducer
⑤ Channel 7 for 2-wire transducer (with external supply)
⑥ Potential compensation
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