20
ICC
Figure 10: EtherCAT LEDs
The RUN LED reflects the status of the EtherCAT state machine (refer to Table
Table 1: EtherCAT RUN LED
LED State
Indication
Off
INIT state / no power
Green
OPERATIONAL state
Green, blinking
PRE-OPERATIONAL state
Green, single flash
SAFE-OPERATIONAL state
Red
EXCEPTION state (fatal event)
The ERR LED indicates any communication-related errors (refer to Table 2).
Table 2: EtherCAT ERR LED
LED State
Indication
Off
No error / no power
Red, blinking
Invalid configuration
Red, single flash
Unsolicited state change
Red, double flash
Sync manager watchdog timeout
Red
PDI watchdog timeout
The port 1 and port 2 link/activity LEDs indicate the EtherCAT network link status
and communication activity (refer to Table 3).
RUN LED
ERR LED
Port 2
Link/Activity
Port 1
Link/Activity