Hardware reference
HARDWARE REFERENCE MANUAL
227
Revision 5.0
EtherCAT Communications Status Indicators
fig. 121
The table below shows the LED indication status and the corresponding
conditions of the communications.
/i
Name
Colour
Status
Description
L/A IN
Green
OFF
Link not established in physical layer
ON
Link established in physical layer
Flickering
In operation after establishing link
L/A OUT
Green
OFF
Link not established in physical layer
ON
Link established in physical layer
Flickering
In operation after establishing link
RUN
Green
OFF
Init state
Blinking
Pre-Operational state
Single flash
Safe-Operational state
ON
Operational state
ERR
Red
OFF
No error
Blinking
Communications setting error
Single flash
Synchronization error or communica-
tions data error
Double flash
Application WDT timeout
Flickering
Boot error
ON
PDI WDT timeout