Status LEDs

The EtherCAT® status is shown by the EtherCAT® Communication Module’s LEDs. Some LEDs are two colored.

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Position of the LEDs

Meaning of the diagnosis LEDs
LED Color Status Meaning
PWR Green On Power supply available
Blinking
Off Power supply not available or defective hardware
RDY Yellow On Boot procedure
Blinking Boot failure
Off
RUN Green On Communication Module is operational
Blinking
Off Communication Module is not operational
STA1 ETHCAT Green On No bus error, communication running
Blinking Establishing communication
Off System error
STA2 ETHCAT Red On Configuration error
Blinking
Off No error

The RJ45 Ethernet connector contains two LEDs showing the current Ethernet port connection state. The following figure and table show the position and function of the LEDs:

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Position of the LEDs in the RJ45 connectors

Meaning of the diagnosis LEDs
LED Color Status Meaning
ETHCAT1 LED “Link” Green On Ethernet connection established
Off No Ethernet connection
ETHCAT1 LED “RX/TX” Yellow On Device sends/receives frames
Off No Ethernet connection
ETHCAT2 LED “Link” Green   Connector ETHCAT2 is not used
ETHCAT2 LED “RX/TX” Yellow