Diagnostics and troubleshooting
8.2
Error displays and STATUS LED for remote diagnosis
Tab. 8.7:
STATUS LED displays – Causes and measures
LED
Color
STATUS
Green
LED
---
Leuze electronic GmbH + Co. KG
State
possible causes
Flashing
Warning message(s) set:
• SIGNAL QUALITY indicator
without green LED.
• Temperature, warning or error
(TMP).
• Laser pre-failure (LSR).
• Link Loss Counter has trig-
gered (LLC).
OFF
The transmitter is deactivated:
• No supply voltage.
• The LINK and LINK/ACT LEDs
are off.
• MAS EtherCAT configuration
is activated on both devices or
MAS EtherCAT configuration
is deactivated on both devices.
• SIGNAL QUALITY indicator
shows only red LEDs.
DDLS 538 ...
Measures
Check cause for the reduced
SIGNAL QUALITY:
• Device alignment.
• Clean optical window.
• Eliminate the possibility of
environmental influences such
as snow, rain, fog.
• Laser diode: at end of life
expectancy
Check LSR LED (see chapter
8.1 "Error displays of the operat-
ing state LEDs").
Check ambient temperature
• Initiate measures for lowering
the ambient temperature.
Check supply voltage.
Check EtherCAT cable connection.
Check MAS EtherCAT configuration
(see chapter 7.2 "MAS EtherCAT
configuration of the DDLS 538 ..."):
• Device installed on master side:
activate MAS
• Device installed on slave side:
deactivate MAS
Check cause for the reduced
SIGNAL QUALITY:
• Device alignment
• Clean optical window
• Eliminate the possibility of
environmental influences such
as snow, rain, fog
• Laser diode: at end of life
expectancy
Check LSR LED (see chapter
8.1 "Error displays of the
operating state LEDs").
64