LED Indicators

Introduction

There are two sets of LED indicators on the front of the BMENOC0321 control network module:

LEDs that report the performance of the module and its communications with the network appear as words (or abbreviations) at the top of the module.
Small LEDs that report the status of activity and connectivity of the Ethernet ports are next to each RJ45 connector on the front of the module.

LED Indications

This is the LED display on the front of the BMENOC0321 module:

NOTICE

UNINTENTIONAL 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.

This table describes the LEDs:

LED	Color	State	Description
RUN	green	on	The module is configured.
		off	There is no power to the module, or the module is not configured.
		blinking	The module is in power-up test or in OS update.
ERR	red	on	A detected error that is not an X Bus communication error.
		off	There is no power to the module, no errors are detected, or the module is in OS update.
		blinking	The module is not configured.
		blinking	An X Bus communication error is detected.
MS (module status)	–	off	There is no power to the module.
	green	on	The module is operating correctly.
	green	blinking	The module is not configured.
	red	on	A major non-recoverable error (firmware error as an example) is detected.
	red	blinking	A recoverable error is detected or the BMENOC0321 has a duplicate IP address.
NS, NS1, NS2 (network status) (See the note below.)	–	off	There is no power to the module or there is no link on all external ports, including the Ethernet backplane port.
	green	on	At least one CIP connection for which the BMENOC0321 module is the originator has been established.
	green	blinking	The module has an IP address, but there is no CIP connection.
	red	on	The module has a duplicate IP address, or the module is in OS update.
	red	blinking	At least one exclusive owner CIP connection (for which the BMENOC0321 is the target) is timed out. The LED blinks until the connection is reestablished or the module is reset.
NOTE: The NS, NS1, and NS2 LEDs indicate the network status of their respective subnets.

Ethernet Port LEDs

There are two LEDs associated with each RJ-45 connector:

These LEDs report the activity and connectivity of the associated Ethernet port:

LED	Color	State	Description
LINK (link/speed)	green	on	The 1000 Mbps link is detected.
	yellow	on	The 10/100 Mbps link is detected.
	—	off	No link to the port is detected.
ACT (activity)	green	blinking	There is transmit or receive activity on the port.
		on	The link is detected, but there is no activity on the port.
		off	There is no link to the port.