Device description
Leuze electronic
DDLS 548i
17
Tab. 3.2:
Meaning of the operating state indicators
LED
Color
State
Description
PWR
---
OFF
No supply voltage (see chapter 8.1 "Error displays of the op-
erating state LEDs")
Green
Flashing
Device is being initialized.
• Supply voltage connected
• Initialization running
• No data is sent or received.
Green
Continuous light
Data transmission path ready
• Initialization finished
Red
Flashing
Warning set (see chapter 8.1 "Error displays of the operating
state LEDs")
• No green and orange LEDs in SIGNAL QUALITY indica-
tor
• The optical link is interrupted.
• The laser diode of the transmitter is defective.
Red
Continuous light
Device error (see chapter 8.1 "Error displays of the operating
state LEDs")
• The function of the device is limited.
The displays of the other operating state LEDs may pro-
vide information on the cause of the error.
Orange
Flashing
PROFINET wave function activated
• The PWR and BUS LEDs flash in sync in orange.
TMP
---
OFF
Operating temperature in the specified working range
Orange
Continuous light
• Warning: The operating temperature is above or below
the specified working range by a maximum of 5 °C (see
chapter 8.1 "Error displays of the operating state LEDs").
• Data transmission remains active.
Red
Continuous light
• The operating temperature is above or below the speci-
fied working range by more than 5 °C (see chapter 8.1
"Error displays of the operating state LEDs").
• The operating time outside of the permissible operating
temperature is detected by the device.
• Data transmission remains active.
LSR
---
OFF
Laser diode of the transmitter with sufficient function reserve
Orange
Continuous light
• Warning: The laser diode of the transmitter signals the
imminent end of the life expectancy (see chapter 8.1 "Er-
ror displays of the operating state LEDs").
Limits to the maximum data transmission distance may
occur.
• Data transmission remains active.