cExpress-AL
Module Interfaces
33
4.3. Status
LEDs
To facilitate easier maintenance, status LED’s are mounted on the board.
LED1
LED2
LED3
LED Descriptions
Name
Color
Connection
Function
LED1 Blue
BMC
output
Power Sequence Status Code (BMC)
Power Changes, RESET
(see 5.1.4 Exception Codes)
LED2 Green
Power
Source
3Vcc S0
LED ON
S3/S4/S5
LED
OFF
ECO mode
LED OFF
LED3 Red
BMC output
and same signal as
WDT (B27) on BtB
connector
Module power up
WD LED = LED OFF
Watchdog counting
WD LED = Keep Last State
Watchdog timed out
WD LED = LED ON
Watchdog RESET
WD LED = LED ON
Rebooted after WD RESET
WD LED = LED ON
Rebooted after PWRBTN
WD LED = LED OFF
Rebooted after RESET BTN
WD LED = LED OFF
Table 3: cExpress-AL LED Descriptions
Summary of Contents for cExpress-AL
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