Burkert Type 8640 - Manual (Page 57)

57
FELDBUSmoduleDeviceNet
State of bus status LEDs
LED Device state Explanation Troubleshooting
not lit up no voltage /
offline Device is not supplied with voltage
Device has still not ended Duplicate
MAN ID Test (test lasts approx. 2 sec)
Device cannot end Duplicate MAC
ID Test.
→
Connect other devices, if the device
is the only network participant
→
Replace device
→
Check baud rate
→
Check bus connection
Green online, communi-
cation master Normal operating state with estab-
lished connection to the master
Flashes
green online, not
communication
master Normal operating state with estab-
lished connection to the master
Flashes
red Connection
time-out One or more I/O connections are in
time-out state.
Red Critical fault Another device with the same MAC
ID address is in the circuit.
No bus connection due to communi-
cation problems
→
Check baud rate
→
Replace device
After voltage is supplied the following function test of the bus status LEDs is carried out:
• BO LED lights up briefly (green, approx. 1/4 sec.)
• BF LED lights up briefly (red, approx. 1/4 sec.)
• LEDs off
No output voltage present:
LED Status Remedial action
U
0
FS
FN
OFF
FS and FN display fault type 3 and fault
number 1.
Check supply voltage
EEPROM access fault
LED Status Remedial action
FS
FN FS and FN display fault type 5 and fault
number 1.
Error accessing EEPROM during start-up;
flashing sequence only appears once.
Device operating with default parameters.
Replacement of electronics may be necessary.
english
Type 8640