44
Manual – Controllers DHE/DHF/DHR21B (standard) and DHE/DHF/DHR41B (advanced)
4
Installing the DHR21B/41B option
Assembly and Installation Notes
4.9.6 LEDs in PROFINET mode
LED L13
(BUS FAULT)
The LED L13 (BUS FAULT) indicates the PROFINET state.
LED L14 (RUN) LED L14 (RUN) indicates that the bus electronics are operating correctly.
State of the L13
LED
Cause of error Remedy
Off • PROFINET IO device is currently
exchanging data with the PROFINET
IO controller (Data Exchange).
-
Flashing green
Flashing green/
red
• The flashing function in the
PROFINET IO controller configura-
tion is activated to visually localize
the stations.
-
Red • Connection to the PROFINET IO
controller has failed.
• PROFINET IO device does not
detect a link.
• Bus interruption
• PROFINET IO controller is not in
operation
• Check the PROFINET connection of
the DHR21B/41B option
• Check the PROFINET IO controller
• Check the cabling of your PROFINET
network
Yellow
Flashing yellow
• The STEP 7 hardware configuration
contains a module that is not
permitted.
• Switch the STEP 7 hardware configu-
ration to ONLINE and analyze the
component states of the slots in the
PROFINET IO device.
State of the
L14 LED
Cause of error Remedy
Green • DHR21B/41B hardware OK.
• Proper operation
–
Off • DHR21B/41B is not ready for
operation.
• Switch the unit on again. Consult SEW
service if the error occurs again.
Red • Error in the DHR21B/41B
hardware
Flashing
green
• Hardware of the DHR21B/41B
does not boot up.
Flashing yel-
low
• Switch the unit on again. Set default IP
address parameter using DIP switch S1.
Consult SEW service if the error occurs again.
Yellow • Switch the unit on again. Consult SEW
service if the error occurs again.
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