As of product version 3: Wiring: 2-wire and 4-wire connection for voltage output
The following picture shows
● The 2-wire connection without compensation of the line resistances and
● The 4-wire connection with compensation of the line resistances.
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$1$
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$1$
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① DAC
② Internal supply
③ Equipotential bonding
④ Functional ground
⑤ Backplane bus interface
⑥ Electrical isolation
Figure 10-14 Wiring and block diagram
ET 200PA SMART I/O modules
10.5 Analog output modules
ET 200PA SMART
Operating Instructions, 06/2019, A5E34192013-AB 203
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