Burkert Type 8681 - Manual (Page 59)

59
DeviceNet - Design
state of bus status led "network" 12.13.2.
led device state explanation troubleshooting
Off No voltage / not
online Device is not supplied with voltage •
Device has still not ended Duplicate •
MAC ID Test (test lasts approx. 2 s)
Device cannot end Duplicate MAC •
ID Test.
Connect other devices, if the device •
is the only network subscriber,
Replace device •
Check baud rate •
Check bus connection •
Green Online, connection
to master exists Normal operating state with estab- •
lished connection to the master
Flashes
green Online, without
connection to
master Normal operating state without •
established connection to the
master
Flashes
red Connection
time-out One or more I/O connections are in •
Time-Out state
New connection establishment by •
master to ensure that the I/O data
is transmitted cyclically.
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 •
As a possible remedy of error, •
please check address
If required, replace device •
english
Control Head Type 8681