Duet 3 3HC and Duet 3 MB6HC communication problem

[aytact]

Hi,

I have Duet 3 3HC and Duet 3 MB6HC. Interestingly, after updating the firmware on both devices, CAN-FD BUS for connection to the Duet 3 Mainboard is starting to communicate after 30-40 minutes, sometimes I can not achieve any connection.

Board: Duet 3 MB6HC (MB6HC)
Firmware: RepRapFirmware for Duet 3 MB6HC 3.4.6 (2023-07-21)

Is there a way to speed up this process?

Thank you

[dc42]

@aytact use M122 to check which bootloader version you have on the 3HC.