A PCAN-Router Pro FD can fail to enter its firmware bootloader when the power supply cannot provide sufficient current. In the documented case, increasing the available supply current restored the bootloader sequence.
Identify the Boot Failure
The failed startup occurred with a FAT32-formatted memory card installed, the rear rotary switch set to F, and the device restarted. CAN 1 through CAN 6 remained steadily orange, the Power LED stayed green, and the Status, Internal Memory, and Memory Card LEDs remained off. PEAK-Flash 2 then reported A BUS error occured while searching for devices.
| Indication | Interpretation | Action |
|---|---|---|
| LEDs flash in the bootloader pattern | Bootloader mode started | Use PEAK-Flash 2 to load the firmware |
| CAN LEDs remain steadily orange with Power green | Observed failed startup state | Check whether the supply can provide sufficient current |
| LEDs remain steadily red after the manual bootloader attempt | Possible FPGA flash corruption | Contact PEAK-System support |
Correct the Power-Supply Limitation
Increase the current available from the device supply, then repeat the intended startup procedure. The evidence does not provide a required current rating, so do not substitute an assumed value; confirm the supply requirement from the applicable PCAN-Router Pro FD documentation and ensure the source does not enter current limiting during startup.
Start Bootloader Mode Manually
- Return the rear rotary switch to position 0.
- Remove the SD card.
- Power off the device.
- Press and hold the white Log on/off button beside the SD card slot.
- While holding the button, power on the device and continue holding it for at least 10 seconds.
- Confirm that the LEDs begin flashing in the bootloader pattern, then use PEAK-Flash 2 to flash the firmware.
Escalate a Persistent Failure
If adequate supply current and the manual procedure do not start bootloader mode, observe the LED state carefully. Steady red LEDs can indicate corrupted FPGA flash requiring FPGA firmware recovery. Contact PEAK-System support and provide the device serial number; do not treat the observed steady orange state alone as confirmation of FPGA corruption.
FAQ
Why will my PCAN-Router Pro FD not enter bootloader mode?
Insufficient available supply current caused the documented failure. Increase the supply current capability and repeat the startup procedure.
How do I manually start the PCAN-Router Pro FD bootloader?
Set the rotary switch to 0, remove the SD card, power off, hold the white Log on/off button, and power on while continuing to hold the button for at least 10 seconds.
What does the PEAK-Flash 2 BUS error mean during device search?
In this case, A BUS error occured while searching for devices. appeared because the device had not entered bootloader mode. First correct the supply-current limitation, then verify the flashing bootloader LED pattern before searching again.
