- Number of inputs/outputs: 16 I
- Input voltage rated: 24 V DC
- Input voltage for "1" signal: 15 – 30 V DC
- Input voltage for "0" signal: -3 – +5 V
- Load voltage Nominal value: 24 V DC
- Input current for "1" signal: 7 mA
Digital input group S7-SM321-16E
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