Leuze electronic DDLS 508i Original Operating Instructions page 18

Device description
LED Color
OLK ---
Green
Orange
ERL ---
Orange
Red
LINK ---
Green
Orange
SIGNAL QUALITY indicator
Eight individual LEDs are available for displaying the received signal level (SIGNAL QUALITY):
• two red LEDs
• two orange LEDs
• four green LEDs
At the optimum received signal level, all LEDs (red, orange, green) are activated.
If the received signal level drops, the LEDs are successively switched off, beginning with the green LEDs.
Leuze electronic GmbH + Co. KG
State Description
OFF No optical data connection
No data transmission
Causes (see chapter 7.1 "Error displays of the operating state
LEDs"):
• Optical window soiled
• Insufficient alignment
• Range exceeded
• Environmental influences (snow, rain, fog)
• Wrong F3/F4 frequency assignment of the devices
• Transmitter deactivated
• Transmitter of the second device deactivated
Continuous light • The optical link exists.
• No data is sent or received.
Continuous light/ Data is sent and received.
flickering light
OFF No link error.
Continuous light • Missing link (Ethernet cable connection) on the second
• SIGNAL QUALITY indicator on the second device without
Continuous light • No cable-connected link to the connected device (see
• SIGNAL QUALITY indicator without green and orange
OFF No cable-connected link to the connected device (see chapter
7.1 "Error displays of the operating state LEDs").
Continuous light • The link to the connected device is OK.
• No data is sent or received.
Continuous light/ • The link to the connected device is active.
flickering light • Data is sent and received.
DDLS 508i
device (see chapter 7.1 "Error displays of the operating
state LEDs").
green and orange LED (see chapter 7.1 "Error displays of
the operating state LEDs").
chapter 7.1 "Error displays of the operating state LEDs").
LED (see chapter 7.1 "Error displays of the operating
state LEDs").
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