Connection lost by M203 setting .



  • Connection lost by M203 setting ?

    Firmware Name: RepRapFirmware for Duet 2 WiFi/Ethernet
    Firmware Electronics: Duet Ethernet 1.02 or later
    Firmware Version: 2.04RC1 (2019-07-14b1)
    Web Interface Version: 1.22.6
    CoreXY, double Z steppers with high gear ratio (1:100)

    During my Z axis testing of the machine... I experienced my first "Connection lost" of the web interface.
    This one was not generated by switching of the board power, but by a "change" in the M203 Z-setting in the config.g

    Connection_lost_byM203 setting.jpg

    For my board and network setup, it's reproducable.

    Maybe there is a simple explanation for this.. or just a setting;


  • administrators

    @wydowaw generally the Duet 3 maxes out at 130Ksteps/s/axis when multiple axis are being moved at once. For your Z axis that should be ~2900mm/min. Saying that, in this test maybe you were only moving the Z axis?

    Also intresting that You had connection lost at 1000mm/min on the second time but not on the first.



  • Correct I am only moving the z-axis (Za,Zb)
    My M92 max value is 2640 , close to ~2900
    M92table.jpg

    But why is this reason to lose connection on the network card??

    Maybe my first test at 1000 was a short time span and it homed..., and I didn't spot the connection loss.
    first you lose the speed indication ...which is followed by the connection lose.

    130Ksteps/s/axis...that's intresting,
    just posted a problem how to do 20Ksteps/axis......so that should be possible! But How??


  • administrators

    @wydowaw My understanding is when you get >130Ks/s the MCU does not have enough time to do lower priorty tasks like the web server.



  • @T3P3Tony

    OK thanks ,
    Case Solved !!


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