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This LED informs EtherCAT communication status. RUN LED, ERROR LED positions at the
front side of the product and, Link/Activity LED individually positions at the top of the right
corner of EtherCAT ports.
Table 2-1: EtherCAT status LED.
Indication Color
Status
Description
RUN
Green
OFF
INIT Status or Power OFF
Blinking
PRE-OPERATIONAL Status
Single Flash SAFE-OPERATIONAL Status
ON
OPERATIONAL Status
Flickering
BOOTSTRAP Status
ERR
Red
OFF
Non-error status or Power OFF
Blinking
Extra Error
Single Flash Sync Error
Double Flash Watch-dog Error
Link/
Activity
Green
OFF
Link not established in the physical layer
ON
Link established in the physical layer
Flickering
In operation after establishing the link
2.4.2.1
Type of status indication
Visual EtherCAT LED status indication is shown in the picture below.
Figure 2-8: EtherCAT LED.