Watchdog And Temperature Status Leds; Watchdog And Temperature Status Leds Function - Kontron CP6003-SA User Manual

Functional Description
2.10.1.2

Watchdog and Temperature Status LEDs

The CP6003-SA provides one Watchdog Status LED (WD LED) and one Temperature Status
LED (TH LED).
Note ...
If the TH LED flashes red at regular intervals, it indicates that the processor
junction temperature has reached a level beyond which permanent silicon dam-
age may occur. Upon assertion of THERMTRIP#, the processor will shut off its
internal clocks (thus halting program execution) in an attempt to reduce the pro-
cessor junction temperature.
Once activated, THERMTRIP# remains latched until a cold restart of the
CP6003-SA is undertaken (all power off and then on again).
Table 2-1:

Watchdog and Temperature Status LEDs Function

LED COLOR
DURING BOOT-UP
WD LED red / The WD LED is not
green lit during boot-up.
TH LED red / The TH LED is lit
green green during boot-
up.
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FUNCTION
Watchdog Status
The WD LED states are:
Off:
•
Green:
•
Red:
•
Temperature Status
The TH LED states are:
Off:
•
Green:
•
Red:
•
Red blinks: If the CPU has been shut off, i.e. the CPU has
•
FUNCTION AFTER BOOT-UP
Watchdog inactive
Watchdog active, waiting to be triggered
Watchdog expired
Power failure
If the CPU temperature is below 100°C
In case of overtemperature of the CPU, i.e. the CPU
has reached a temperature above 100°C
reached a temperature above 125°C. In this event,
all General Purpose LEDs (LED3..LED0) are blinking
red as well.
CP6003-SA
ID 1044-9757, Rev. 2.0