Basic principles
BK11x0, BK1250
30
Version: 4.1
Diagnostic LEDs for the EtherCAT State Machine/PLC
LED
Display
State
Description
RUN
green off
Init
The Bus Coupler is in initialization state
flashing
Pre-Operational
The Bus Coupler is in
pre-operational
state
single flash Safe-Operational The Bus Coupler is in
safe-operational
state
on
Operational
The Bus Coupler is in
operational
state
flickers
Bootstrap
Firmware is being loaded.
ERROR
red
off
-
No error
flashing
Err-Operational
No
Communication
PLC error / lost frames
LEDs for fieldbus diagnostics
BK1120, BK1150
LED
Display
State
Description
LINK / ACT
(X1 IN)
green off
-
No connection on the incoming EtherCAT segment
on
linked
Preceding EtherCAT device connected
flashing
active
Communication with preceding EtherCAT device
LINK / ACT
(X2 OUT)
green off
-
No connection on the outgoing EtherCAT segment
on
linked
Following EtherCAT device connected
flashing
active
Communication with downstream EtherCAT device
BK1250
LED
Display
State
Description
LINK/ACT
green off
-
No connection/communication with the E-bus
flashing
linked
Connection/communication with the E-bus established
LEDs for K-bus diagnostics
LED
Display
State
Description
I/O-RUN
green off
-
K-bus inactive
on
-
K-bus active
