11.13.1 Device Status Led And Bus Led - Burkert 8695 Operating Instructions Manual

Type 8695
DeviceNet installation

11.13.1 Device status LED and bus LED

Function test of the device status LED and bus LED
When voltage has been applied (connection of the network line), the following function test is run for the two-
colored device status LED and bus LED:
• LED is briefly lit green (approx. 1/4 sec)
• LED is briefly lit red (approx. 1/4 sec)
• LED off
Then another function test is run during which the LEDs light up briefly
When the test is complete, the status LEDs indicate the device statuses which are described in the following
table.
Status of the bus LED
LED Device status
No power supply /
Off
not online
Online, connection
Green
to master exists
Online, without
Flashes
connection to
green
master
Flashes Connection
red time-Out
Red Critical fault
Table 23: Status of the bus LED
Status of the device status LED
LED Device status
Off No supply
Green Device is working
Table 24: Status of the device status LED
Explanation
• Device is not supplied with voltage
• Device has still not ended Duplicate
MAC ID Test (test lasts approx. 2 sec)
• Device cannot end Duplicate MAC ID
Test.
• Normal operating status with estab-
lished connection to the master
• Normal operating status 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
Explanation
• Device is not supplied with voltage
• Normal operating status
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
• If required, replace device
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