Siemens Simatic S7-1500 Manual page 14

Wiring
Block diagram and pin assignment for the voltage output
The following figure shows an example of the wiring options:
● 2-wire connection, without compensation for line resistances.
● 4-wire connection, with compensation for line resistances.
①
2-wire connection (jumper at the front connector)
②
4-wire connection
③
Digital-to-analog converter (DAC)
④
Backplane bus interface
⑤
Supply voltage via power supply module
Figure 3-2 Block diagram and pin assignment for the voltage output
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CHx Channel or 4 x channel status (green/red)
RUN Status display LED (green)
ERROR Error display LED (red)
PWR LED for power supply (green)
Analog output module AQ 4xU/I ST (6ES7532-5HD00-0AB0)
Manual, 09/2016, A5E03484696-AD