Siemens SIMATIC S7-1500 Manual page 13

Wiring
Pin assignment for the power supply element
The power supply element is plugged onto the front connector for powering the analog
module. Wire the supply voltage to terminals 41 (L+) and 44 (M). Use terminals 42 (L+) and
43 (M) to loop the potential to the next module.
Figure 3-1
12
Power supply element wiring
Analog output module AQ 4xU/I ST (6ES7532-5HD00-0AB0)
Manual, 07/2014, A5E03484696-AC