Doc. 177/5250x
Rev A
8-2
CANbus Parameters
The display will automatically set up the required CANbus parameters to enable data
gathering from the controllers. These can also be adjusted manually, which can correct
connection issues and improve start-up speed.
Manual / Auto Baud rate
The display will automatically detect the baud rate used on the system by listening into the
CAN bus traffic, and waiting to receive a valid message.
On some vehicle setups this can cause issues related to power on sequencing, and CAN off
problems if there is a conflict, or more than 1 device attempting to auto discover baud rate.
To address this, the auto detect feature can be disabled with the “CANbus-Manual/Auto
Baud” parameter in the Configuration screen.
Once the display is connected to the vehicle, and working correctly, this parameter can
simply be set to “manual”. On future power cycles the display will skip the baud rate
detection process and use the CAN baud rate shown in the “System Baud Rate” parameter.
This will prevent CAN issues related to incorrect baud rates on the CAN bus.
Configuring the display to manual baud rate setting will speed up the display power on
process.
System Information
The first time the display is powered on, and detects some connected Sevcon nodes it will
interrogate the nodes to determine the system configuration. This “system info” is then
stored in the display so that on subsequent power cycles it can start up more quickly.
If the display is moved to a new vehicle or system, then the stored information will probably
not match the actual vehicle setup.
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