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8
FUNCTION DESCRIPTION
8.1
LED Indicators
The USB to CAN adapter has two LEDs (green LED & red LED) to indicate firmware
initialization and CAN bus status for monitoring CAN bus channel status. The green
LED indicates CAN bus data activity while the red LED indicates a CAN bus error.
Following are the definition of different LED combinations:
A: Power up (device initialized)
After USB CAN powers up (device initialized), the USB to CAN adapter flashes the
green and red LED four times to indicate that the USB CAN adapter has been initialized.
B: CAN bus channel open/close
When CAN bus channel opens, the green LED will turn on to indicate that the CAN bus
channel is open; When CAN bus channel closes, the green LED will turn off to indicate
that the CAN bus channel is closed.
C: CAN Bus Data Activity
When CAN data frame is sent or received, the green LED flashes continuously to
indicate CAN bus data I/O activity.
D: CAN Bus Error
When an error occurs on the CAN bus, the red LED flashes continuously to indicated
CAN bus error.
