Siemens SIMATIC - Page 354

Analog modules
6.7 Analog input module SM 331; AI 8 x 12 bit;(6ES7331-7KF02-0AB0)
S7-300 Module data
354 Manual, 06/2017, A5E00105505-AJ
Terminal assignment
The diagrams below show various wiring options The input impedance depends on the
setting of the measuring range module, see table
Measurement types and ranges .
Wiring: Voltage measurement
Figure 6-13 Block diagram and wiring diagram
Measuring range module settings
Measuring range
Measuring range module setting
± 80 mV
± 250 mV
± 500 mV
± 1,000 mV
A
± 2.5 V
± 5 V
1 V to 5 V
± 10 V
B