Leuze electronic DDLS 538 Series Original Operating Instructions page 20

Device description
Tab. 3.3: Meaning of the SIGNAL QUALITY indicators
LED Color
SIGNAL Green
QUALITY
Orange
Red
OFF
Leuze electronic GmbH + Co. KG
State Description
Continuous light • Received signal level with function reserve.
4-stage • The optical link exists.
Continuous light Warning: Received signal level with minimal function re-
serve (see chapter 8 "Diagnostics and troubleshooting").
2-stage
• The optical link exists.
AUT operating mode (Automatic): Data transmission is
active.
MAN (Manual), ADJ (Adjust) operating modes: Data
transmission is deactivated.
• Switching output IO1 of the POWER connection is acti-
vated in operating modes AUT (Automatic), MAN (Man-
ual) and ADJ (Adjust).
Causes:
• Optical window soiled
• Range exceeded
• Environmental influences (snow, rain, fog)
• Insufficient alignment
Continuous light The optical link is interrupted. The received signal level is
not sufficient (see chapter 8 "Diagnostics and troubleshoot-
2-stage
ing").
• No data is sent or received.
• Switching output IO1 of the POWER connection is acti-
vated.
Causes:
• Optical window soiled
• Range exceeded
• Environmental influences (snow, rain, fog)
• Insufficient alignment of the devices
• Wrong F3/F4 frequency assignment of the devices
• Transmitter of the second device deactivated
MAS EtherCAT configuration is activated on both devices.
or
MAS EtherCAT configuration is deactivated on both de-
vices.
DDLS 538 ... 20