Electrical Design
‑75‑
Table 3–30 Indicators of the EtherCAT communication expansion card (SI‑ECAT)
Indicator
State Description
Solution
RUN/ERR
Green
indicator
steady ON
Communication normal N/A
Red indicator
steady ON
ECAT card and node
communication timeout
Check the connector for
interference.
Red indicator
blinking slowly
ECAT card and power
supply unit
communication timeout
1. Check that the
communication card is
installed correctly.
2. Check whether the power
supply unit is normal.
Red indicator
blinking
quickly
ECAT card faulty Troubleshoot the fault
according to the fault code
displayed on the operating
panel of the power supply unit.
EC RUN Green
indicator
blinking slowly
EtherCAT state machine
status: disconnection
N/A
Green
indicator OFF
EtherCAT state machine
status: INIT = initializing
N/A
Green
indicator
blinking
quickly
EtherCAT state machine
status: PREOP = pre‑
operational
N/A
Green
indicator
blinking once
EtherCAT state machine
status: SAFEOP = safe
operation
N/A
Green
indicator
steady ON
EtherCAT state machine
status: OP = operating
N/A
EC ERR
Red indicator
OFF
EtherCAT communication
normal
N/A
Red indicator
steady ON
EtherCAT communicate
faulty
Check the fault code on the
operating panel of the power
supply unit.
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