Error handling and diagnostics
EK18xx
54
Version: 2.2
7
Error handling and diagnostics
7.1
Diagnostic LEDs
Fig. 47: Diagnostic LEDs
LEDs for power supply diagnostics
LED
Display
State
Description
Us
green off
-
No operating voltage present at the Bus Coupler
on
-
24 V
DC
operating voltage present at the Bus Coupler
Up
green off
-
No power supply present at the power contacts
on
-
24 V
DC
power supply present at the power contacts
Diagnostic LEDs for the EtherCAT State Machine/PLC
LED
Display
State
Description
RUN
gree
n
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.