Analog modules
6.8 Analog input module SM 331; AI 2 x 12 bit; (6ES7331-7KB02-0AB0)
S7-300 Automation System Module data
6-62 Manual, 08/2006, A5E00105505-04
Terminal assignment
The following diagrams show different possible forms of wiring. The input impedance is
determined by the set measuring range.
Wiring: Voltage measurement
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Figure 6-18 Wiring and block diagrams
Measuring range module settings
Measuring range Measuring range module setting
± 80 mV
± 250 mV
± 500 mV
± 1000 mV
A
± 2.5 V
± 5 V
1 V to 5 V
± 10 V
B
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