Leuze electronic DDLS 538 Series Original Operating Instructions page 29

Mounting
Ä Connect the second device electrically (see chapter 5 "Electrical connection").
ð The AUT LED (continuous light) indicates that the start-up phase of the device after "POWER on"
has been concluded.
ð After the start-up phase, the operating mode can be changed.
Ä Switch on the alignment laser of the second device. Activate the LAS (Alignment laser) operating mode
to switch on the alignment laser (see chapter 6.1 "Setting the operating mode").
Leuze electronic GmbH + Co. KG DDLS 538 ... 29