Burkert Type 8691 - Manual (Page 55)

55
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11.13.2 function test of the status leDs
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 status 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 explanation troubleshooting
Off
No power supply /
not online
• 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.
• 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 status with estab-
lished connection to the master
Flashes
green
Online, without
connection to
master
• Normal operating status 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
• If required, replace device
Table 23: Status of the bus LED
Status of the device status LeD
leD Device status explanation
Off No supply • Device is not supplied with voltage
Green Device is working • Normal operating status
Table 24: Status of the device status LED
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Type 8691