Wiring: Voltage measurement
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5HI
① Voltage measurement: (±5 V, ±10 V, 1 V to 5 V, 0 V to 10 V)
② Voltage measurement (± 50 mV, ± 500 mV, ± 1 V) (note the input resistance defined in the technical data)
③ Equipotential bonding
④ Internal supply
⑤ + 5 V from backplane bus
⑥ Logic and backplane bus interface
⑦ Electrical isolation
⑧ Multiplexer
⑨ Analog to Digital Converter (ADC)
⑩ Current source
Figure 10-6 Block diagram and terminal diagram
ET 200PA SMART I/O modules
10.4 Analog input modules
ET 200PA SMART
154 Operating Instructions, 06/2019, A5E34192013-AB
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