Controller LEDs

SynqNet controller LEDs will BLINK to indicate a fault (or undiscovered network). A controller with no blinking LEDs is in normal cyclic operation (without faults). Each SynqNet port has two LEDs. And each LED has a particular function, which is described in further detail below.

LED State Table: SynqNet

LED	Port	Meaning	Controlled by	State
LED1	OUT	Link Activity	PHY	ON = link active
				OFF = link inactive
LED2	OUT	Network Activity	MAC	ON = Tx and Rx active (cyclic phase)
				BLINK = Tx only active (discovery phase)
				OFF = Idle (shutdown phase), or during a network reset.
LED3	IN	Link Activity	PHY	ON = link active
				OFF = link inactive
				ON = Tx
LED4	IN	Network Activity	MAC	ON = Tx and Rx active (cyclic phase)
				BLINK = Tx only active (discovery phase)
				OFF = idle (shutdown phase), or during a network reset.

LED1 and LED3 = Link Activity

On (Link Active)
Off (Link Inactive)

LED2 and LED4 = Network Activity

On (Cyclic Phase--Tx and Rx are Active)
Off (Shutdown Phase--Idle State or network reset)
Blink (Discovery Phase--only Tx is Active)

CAN

The XMP-CAN controllers have two green LEDs. These LEDs give a visual representation of the activity on the CAN network. The locations of the LEDs vary depending on the type of XMP-CAN controller. The photos and table below show the locations and meanings of each LED.

T011-0004
XMP-SynqNet-CPCI-Dual

D9 = CAN 2
D10 = CAN 1

T014-0001
XMP-SynqNet-PCI-RJ-CAN

D8 = CAN 2
D9 = CAN 1

LED State Table: CAN

CAN1	CAN2	Code Executing	State
OFF	OFF	None	No power / No bootloader present

BLINK	ON	Bootloader	No firmware (waiting for firmware)


OFF	ON	Bootloader	Programming firmware


ON	ON	Firmware	No Configuration
ON	OFF		Bootloader present with valid firmware
ON	Fast Blinking (0.25/sec)	Firmware	CAN Bus Error
ON	Slow Blinking (1/sec)	Firmware	CAN Operational