Displays
7 Displays
The CANlink II has four two-color LEDs (see Fig. 2-1, or Fig. 3-1). The LEDs behave
as follows depending on the operation mode of the CANlink II.
7.1 Normal
mode
7.1.1 Power LED
The Power LED is lit when the CANlink II is connected to the supply voltage and
the microcontroller is initialized. With a watchdog reset, the Power LED is lit red.
7.1.2 CAN LED
The CAN LED is lit green for each message received or transmitted without errors.
When the CAN error warning level is reached, the corresponding LED is lit red
LED with reception and transmission. In the ’CAN BUS OFF’ state, no more com-
munication is possible and the LED is permanently lit red. If data are lost on the
CAN interface, the CAN LED flashes red in stand-by mode, with each message
received or transmitted without errors the CAN LED is briefly lit green in be-
tween.
7.1.3 Status LED
In the operation mode COPlink, the Status LED is lit as defined in the ”CANopen
Indicator Specification“:
LED state
Meaning
Is lit green
CANopen state is OPERATIONAL
Flashes green
CANopen state is PREOPERATIONAL
Flickers green
CANopen state is STOPPED
Is lit red
CAN controller is in bus off state
Flashes green-red Error or warning on CAN controller
The Status LED has no function in the operation mode CANlink.
7.1.4 RS232 LED
The RS232 LED flickers green during serial communication. If data are lost on the
RS232 interface, the RS232 LED flashes red in stand-by mode, with serial com-
munication the RS232 LED flickers red.
Copyright IXXAT Automation GmbH
CANlink II - Manual, V1.3
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