3. Diagnosis
3−9
Festo P.BE−CPX−FB38−EN en 0804NH
Error EtherCAT error (communication error)
LED (red) Sequence Status Meaning/error handling
LED is off
ON
OFF
No fault EtherCAT communication of the
bus node is in normal operating
state
LED flashes
ON
OFF
Invalid configuration
No connection to the EtherCAT
network
Possible causes:
Cable/connection
disconnected (interrupted)
Device has no connection
to the EtherCAT Master
(for control)
Master is not active
Error handling check:
· The network connection
(interrupted, short−circuited or
disturbed network connection)
· The configuration, in particular
the physical and logical position
and addressing of the bus node
Tab.3/4: Fault diagnosis with the LED error
L/A2, L/A1 Connection status (link/activity) Out2/In1
LED (green) Sequence Status Meaning/error handling
LED is off
ON
OFF
No physical network
connection
Check network connection /
network cable
LED lights up
ON
OFF
Network connection OK
LED flickers
1)
ON
OFF
Flickering: Data
transmission is running
1)
Rapid flickering seems to be lighting; the light intensity depends on the data traffic
Tab.3/5: Fault diagnosis with the LEDs L/A2, L/A1
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