Diagnostics and troubleshooting
Leuze electronic
DDLS 548i
57
Tab. 8.4:
BUS LED displays - Causes and measures
LED
Color
State
possible causes
Measures
BUS
OFF
No supply voltage connected to
the device
• Check supply voltage
Device not yet recognized by the
PROFINET
• Check device name, check link LED
Hardware error
• Contact Leuze electronic customer
service (see chapter 11 "Service and
support").
BUS
Red
Flashing
Incorrect wiring
• Check wiring
• Communication error:
Configuration failed
• IO Error: no data exchange
• Check configuration, in particular with
respect to address assignment (device
names/IP address/MAC ID)
• Carry out a reset on the control
Communication error on the
PROFINET:
No communication established
to the IO controller ("no data ex-
change")
• Check protocol settings
• Check configuration, in particular with
respect to address assignment (device
names/IP address/MAC ID)
Protocol not released
• Activate TCP/ IP or UDP
Wrong device name set
• Check configuration, in particular with
respect to address assignment (device
names/IP address/MAC ID)
Incorrect configuration
• Check configuration, in particular with
respect to address assignment (device
names/IP address/MAC ID)
Different protocol settings
• Check protocol settings
BUS
Red
Continu-
ous light
Bus error/communication error:
No communication established
to the IO controller ("no data ex-
change")
• Check protocol settings
• Check configuration, in particular with
respect to address assignment (device
names/IP address/MAC ID)
Tab. 8.5:
OLK LED displays - Causes and measures
LED
Color
State
possible causes
Measures
OLK
---
OFF
No optical data connection:
• Optical window soiled
• Insufficient alignment
• Range exceeded
• Environmental influences (snow,
rain, fog)
• Wrong frequency assignment of
the devices
• Transmitter deactivated
• Transmitter of the second device
deactivated
• Clean optical window
• Eliminate the possibility of envi-
ronmental influences such as
snow, rain, fog.
• Check alignment of the devices
(see chapter 6.2 "Fine adjust-
ment").
• Check F3/F4 frequency assign-
ment of the devices.
• End deactivation of the transmit-
ters.