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CAN controller in
bus off
state
If the controller is in
bus off
state in Bridge mode the
messages in the Rx queue are transmitted via a
Bluetooth connection to the connected CANblue. The
messages in the Tx queue are transmitted via CAN
when the CAN connection is restored.
If the Tx queue is full, because of new messages
received via the Bluetooth connection during the bus
off, the oldest messages are overwritten (Tx queue can
store maximally 256 messages).
Bus off recovery is started automatically:
•
5 seconds after the bus off the CAN controller is
stopped.
•
After 1 second the CAN controller is started.
•
If the CAN controller detects 128 occurrences of
11 consecutive bits (e.g. no CAN message
transmitted until after 128 occurrences of 11
consecutive bits), all error flags are reset and the
CAN controller is in operating state (according to
ISO 11898-1).
•
Automatic bus off recovery is done until the CAN
controller is in
operating
state or stopped via the
Config connection.
Manual bus off recovery:
•
Stop the CAN controller via the Config connection
and restart the CAN controller.
Connection via the previously used COM port is not possible after restart.
If the device is disconnected from power while still
connected to Windows, the COM port stays occupied.
►
Make sure that the device is disconnected from
Windows before disconnecting the device from
power.
CANblue II can not be accessed after the computer was in sleep mode.
If the computer turns to sleep mode, the Bluetooth
connection may not be closed completely. The
connection remains and blocks all applications from
connecting to the CANblue II.
A restart of the CANblue II does not solve the issue.
If the computer was in sleep mode, and the connection
is blocked:
►
Reboot the computer.
►
Stop CANblue II in
Device Server Control
.
►
Stop CANblue II in canAnalyser by clicking the
Stop
button in the Control Panel.
►
Stop all applications which access a CAN
controller.
►
In canAnalyser Control Panel remove the
CANblue II via
Remove Device
.
►
Reinstall the CANblue II (see Installation Guide
VCI Driver
).
CANblue II User Manual
4.01.0126.20000 EN 3.2
