SEW-Eurodrive DH 21B Series, Руководство пользователя, Страница: 69 / 92

8 Operation
DHR21B/41B controller
Manual – DHE/DHF/DHR21B (standard) and DHE/DHF/DHR41B (advanced)
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Status LED Status Meaning
Red, flashing every
125 ms BUS WARNING The device is performing a DUP-MAC
check and cannot send any messages
because no other stations are connec-
ted to the bus (error passive state).
Red, flashing with 1 Hz BUS WARNING The number of physical bus errors is
too high. No more error telegrams are
actively written to the bus (error pass-
ive state).
Red BUS ERROR • BusOff state
• The number of physical bus errors
has increased despite switchover
to error-passive state. Access to
the bus is switched off.
Yellow POWER OFF External voltage supply has been
turned off or is not connected.
8.3 DHR21B/41B controller
The DHR21B/41B controller comes equipped with 4 LEDs (L11 – L14) that indicate
the present state of the controller in EtherNet/IP and MODBUS/TCP mode.
No. Name Function in EtherNet/IP and Modbus/
TCP mode
LED 11 – Reserved
LED 12 – Reserved
LED 13 Network status Network status
LED 14 Module status Module status
No. Name Function in PROFINET mode
LED 11 – Reserved
LED 12 – Reserved
LED 13 BUS FAULT Bus error
LED 14 RUN Bus running
8.3.1 LEDs in PROFINET mode
LED "L13" (BUS FAULT)
LED "L13" (BUS FAULT) indicates the PROFINET state.
Status LED Possible cause Measure
Off PROFINET IO device is exchanging
data with the PROFINET IO controller
(Data Exchange). –
• Flashing green
• Flashing green/red
The flashing function in the
PROFINET IO controller configuration
is activated to visually localize the sta-
tions.
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22900055/EN – 08/2016