Analog modules
6.6 Analog input module SM 331; AI 8 x 13 Bit; (6ES7331-1KF02-0AB0)
S7-300 Module data
Manual, 06/2017, A5E00105505-AJ
341
Wiring: Voltage measurement
Voltage measurement: (± 5V, ± 10V, 1 ... 5V, 0...10V)
Voltage measurement (± 50 mV, ± 500 mV, ± 1 V) (note the input resistance defined in the technical data)
Logic and backplane bus interface
Analog to Digital Converter (ADC)
Figure 6-10 Block diagram and terminal diagram