State Of Bus Status Led "Network - Burkert 8681 Operating Instructions Manual

12.13.2. State of bus status LED "Network"

LED Device state
Off No voltage / not
online
Green Online, connection
to master exists
Flashes Online, without
green connection to
master
Flashes Connection
red time-out
Red Critical fault
64
Explanation
• 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.
• Normal operating state with estab-
lished connection to the master
• Normal operating state without
established connection to the
master
• One or more I/O connections are in
Time-Out state
• Another device with the same MAC
ID address is in the circuit
• No bus connection due to communi-
cation problems
English
Control Head Type 8681
DeviceNet-Design
Troubleshooting
• Connect other devices, if the device
is the only network subscriber,
• replace device
• check baud rate
• check bus connection
• New connection establishment by
master to ensure that the I/O data is
transmitted cyclically.
• Check baud rate
• Please check address as possible
troubleshooting
• If required, replace device