LED Status Displays

The status of the Ethernet Communication Module is displayed by means of 5 status LEDs. The following figure shows the positions of the LEDs. The table after that shows the LED statuses and their meanings.

LED	Color	Status	Meaning
PWR	Green	On	Power supply available
		Off	Power supply not available or defective hardware
RDY	Yellow	On	Boot procedure
		Blinking	Boot failure
RUN	Green	On	Communication Module is operational
		Off	Communication Module is not operational
STA1	Green	Blinking (1 Hz)	Device ready
		Blinking (5 Hz)	Device configured / UDP traffic
		On	Modbus communication established
STA2	Red	On	Modbus communication error
		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:

Position of the LEDs in the RJ45 connectors

LED	Color	Status	Meaning
ETH1 LED “Link”	Green	On	Ethernet connection established
		Off	No Ethernet connection
ETH1 LED “RX/TX”	Yellow	On	—
		Blinking	Device sends/receives frames
		Off	—
ETH2 LED “Link”	Green	On	Ethernet connection established
		Off	No Ethernet connection
ETH2 LED “RX/TX”	Yellow	On	—
		Blinking	Device sends/receives frames
		Off	—