LED Indicators on Adapter Modules

Display

NOTICE

UNINTENDED EQUIPMENT BEHAVIOR

Confirm that each module has a unique IP address. Duplicate IP addresses can cause unpredictable module/network behavior.

Failure to follow these instructions can result in equipment damage.

LED conditions:

Module State⁽¹⁾	Description	Run	IO	MS (Module Status)		NS (Network Status)
Module State⁽¹⁾	Description	Green	Red	Green	Red	Green	Red
power-up sequence	Order of LEDs blinking	1	2	3	4	5	6
not configured	IP address not valid	-	-	flashing	off	off	off
not configured	valid IP address, but invalid configuration	off	off	flashing	off	flashing	off
configured	no external error detected	flashing	off	-	-	flashing	off
configured	external error detected	flashing	on	-	-	flashing	off
I/O data communication established	STOP	flashing	(NOTE 1)	on	off	on	off
I/O data communication established	RUN	on	(NOTE 2)	on	off	on	off
detected error states	recoverable error	-	-	off	flashing	-	-
	nonrecoverable error	flashing	on	off	on	-	-
	One or more owner connections has timed out	-	-	-	-	-	flashing
	duplicate IP address	-	-	-	-	off	on
during OS firmware update		flashing	off	off	on	off	on
(1) For more information about the module states, refer to your system hardware reference manual. NOTE 1 (STOP state): on: An input or output is a detected error that originates in a module, or a channel configuration or a channel configuration error has been detected. off: Operations are normal. NOTE 2 (RUN state): on: External error is detected. off: External error is not detected.

These LEDs report the status of the Ethernet port:

Name	Color	Status	Description
LINK	green	on	100 Mbps link detected
	yellow	on	10 Mbps link detected
	-	off	no detected link
ACT	green	blinking	active Ethernet link (transmit or receive)
ACT	-	off	inactive Ethernet link