Maximum velocity

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  • #4338
    mcgyvr
    Member

    I have max velocity set to 250 in/min on both my x and Y axis. When you do a G0 X5 or G0 Y5 the velocity is never reported higher than 250 as expected. But when its an X AND Y movement it reports higher than 250 (into the 300’s) (see below)
    Is that normal and its the “calculated” angular velocity or is this a bug.. (running master branch 370.08 firmware)

    [xvm] velocity maximum 250.000 in/min
    tinyg [inch] ok>
    [yvm] velocity maximum 250.000 in/min
    tinyg [inch] ok>
    tinyg [inch] ok>
    posx:6.000,posy:6.000,vel:0.401,stat:5
    posx:5.981,posy:5.981,vel:44.194
    posx:5.862,posy:5.862,vel:168.459
    posx:5.580,posy:5.580,vel:300.540
    posx:5.193,posy:5.193,vel:352.652
    posx:4.778,posy:4.778,vel:353.553
    posx:4.362,posy:4.362
    posx:3.967,posy:3.967
    posx:3.551,posy:3.551
    posx:3.156,posy:3.156
    posx:2.740,posy:2.740
    posx:2.324,posy:2.324
    posx:1.929,posy:1.929
    posx:1.513,posy:1.513
    posx:1.098,posy:1.098
    posx:0.706,posy:0.706,vel:347.140
    posx:0.336,posy:0.336,vel:280.498
    posx:0.094,posy:0.094,vel:137.192
    posx:0.009,posy:0.009,vel:28.962
    qr:24
    posx:0.000,posy:0.000,vel:0.000,stat:3

    #4345
    alden
    Member

    It is correct. The calculated velocity for G0 is the vector sum of all the velocities in the move. FOr G1 (and G2, G3) the velocity is limited to the feedrate specified in the F word. Try G1 F250 x100 y100 and the velocity will not go above 250.

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