EtherCAT Communication
‑86‑
Table 5–2 Description of ECAT card indicator
Indicator
Status Description
Solution
RUN/ERR Steady ON in
green
The communication is
normal.
None
Steady ON in
red
The communication
between the ECAT card
and a node times out.
Check whether the connector
has interference.
Flicker slowly
in red
The communication
between the ECAT card
and the power supply unit
times out.
1. Check whether the
communication card is
properly installed.
2. Check whether the power
supply unit is normal.
Flicker quickly
in red
The ECAT card fails. Troubleshoot based on the fault
code on the power supply unit
display panel.
EC RUN Green
indicator OFF
The state of the EtherCAT
state machine is INIT
(Initializing).
None
Flicker quickly
in green
The state of the EtherCAT
state machine is PREOP
(Pre‑operation).
None
Flicker slowly
in green
The state of the EtherCAT
state machine is SAFEOP
(Safe operation).
None
Steady ON in
green
The state of the EtherCAT
state machine is OP
(Operation).
None
EC ERR
Red indicator
OFF
The EtherCAT
communication is normal.
None
Steady ON in
red
The EtherCAT
communication is faulty.
Check the fault code displayed
on the power supply unit
operating panel.
EC LA
Yellow
indicator OFF
The previous EtherCAT
device is not connected.
None
Steady ON in
yellow
The previous EtherCAT
device is connected.
None
Green
indicator OFF
No data is exchanged at
the network port.
None
Flicker in
green
Data is exchanged at the
network port.
None