Festo CDVI-DN Manual page 78

3. Diagnostics
LED Colour
MNS Off
Green,
MNS
Flashing
Red,
MNS
Flashing
MNS Red
Lit up
Red-green
MNS
Flashing
*)
Test algorithm which ensures that no station numbers on the network are assigned twice. The test
is usually carried out automatically when the network connection is set up.
Tab. 3/3: Fault diagnosis with MNS LED
3-6
Error diagnosis with the MNS LED (DeviceNet)
Operating status
– Operating voltage for
electronics not applied
*)
– Dup_MAC_ID-Test
not yet been concluded
– CDVI-DN is not assigned
to any master.
– Dup_MAC_ID-Test has
been concluded, but
CDVI-DN has no connec-
tion to the fieldbus.
– Connection time-out or
– Malfunction of the
master
– Communication fault
– Hardware fault which
cannot be rectified
– Specific communication
fault
Error handling
•
Check operating voltage supply (pin 1).
•
Wait for end of test.
has If the LED remains off:
•
Station number possibly assigned twice;
correct station numbers.
•
Check configuration.
•
Master is possibly not in RUN mode: check
master status.
•
Find out and eliminate cause of time-out.
•
Check master status.
•
Check the baud rate setting and the connec-
tion to the network.
•
Replace CDVI-DN; servicing required.
•
Check fieldbus.
•
Check master status.
Festo P.BE-CDVI-DN-EN en 0805a