Rapid speed Solved

Now that I've had my converted X3 mill running for a year I'm doing some fine tuning. I running AXIS and using a using a VistaCNC P4-SE pendant. I was trying to speed up the rapids and they are now much faster than before but only when using the pendant in velocity mode and for the short move after homing that takes the axis to the home offset location. When I issue a G0 X2 the axis moves at the same pace it used to. What an I missing?

Thanks
John

[AXIS_0]
TYPE = LINEAR
HOME = 0.0
FERROR = 0.5
MIN_FERROR = 0.05
MAX_VELOCITY = 6.0
MAX_ACCELERATION = 36.0
HOME_SEQUENCE=1
HOME_SEARCH_VEL = -.90000
HOME_LATCH_VEL = .10000
BACKLASH = 0.0001
# The values below should be 25% larger than MAX_VELOCITY and MAX_ACCELERATION
# If using BACKLASH compensation STEPGEN_MAXACCEL should be 100% larger.
STEPGEN_MAXVEL = 6.3
STEPGEN_MAXACCEL = 61.2
P = 1000.0
I = 0.0
D = 0.0
FF0 = 0.0
FF1 = 1.0
FF2 = 0.0
BIAS = 0.0
DEADBAND = 0.0
MAX_OUTPUT = 0.0
# these are in nanoseconds
DIRSETUP = 200
DIRHOLD = 200
STEPLEN = 1000
STEPSPACE = 2000
STEP_SCALE = 10160.000
MIN_LIMIT = -0.001
MAX_LIMIT = 19.7
HOME_OFFSET = 0.6

Is your rapid override set to 50% when you enter the GUI

It is set to 100%

I also just changed the MAX_LINEAR_VELOCITY from 1 to 6 in the [TRAJ] section and that had no effect.

Are there other velocity parameters in the top of the ini? I can't remember if there was

There are some in the [DISPLAY] and [TRAJ] sections.

[DISPLAY]
DISPLAY = axis
POSITION_OFFSET = RELATIVE
POSITION_FEEDBACK = ACTUAL
MAX_FEED_OVERRIDE = 2.000000
MAX_SPINDLE_OVERRIDE = 1.000000
MIN_SPINDLE_OVERRIDE = 0.500000
INTRO_GRAPHIC = linuxcnc.gif
INTRO_TIME = 5
PROGRAM_PREFIX = /home/john/linuxcnc/nc_files
PYVCP = pyvcp-panel.xml
INCREMENTS = .1in .05in .01in .005in .001in .0005in .0001in
POSITION_FEEDBACK = ACTUAL
DEFAULT_LINEAR_VELOCITY = 0.250000
MAX_LINEAR_VELOCITY = 1.000000
MIN_LINEAR_VELOCITY = 0.016670
DEFAULT_ANGULAR_VELOCITY = 12.000000
MAX_ANGULAR_VELOCITY = 180.000000
MIN_ANGULAR_VELOCITY = 1.666667
EDITOR = gedit
GEOMETRY = xyz

[TRAJ]
AXES = 3
COORDINATES = X Y Z
LINEAR_UNITS = inch
ANGULAR_UNITS = degree
CYCLE_TIME = 0.010
DEFAULT_VELOCITY = 0.50
MAX_LINEAR_VELOCITY = 6.00

What's default velocity

This is what the manual says. I tried playing with DEFAULT_VELOCITY but it didn't change what I am looking for.

DEFAULT_VELOCITY = 0.0167 - The initial rate for jogs of linear axes, in machine units per second. The value shown in Axis equals machine units per minute.

DEFAULT_LINEAR_VELOCITY = .25 - The default velocity for linear jogs, in , machine units per second.

It was this. I thought I had tried a different value but apparently not. I changed it from 1 to 4 and G0 moves are now faster. Now I just need to decide just how fast I want it. It looks like it can go a lot faster than I would be comfortable with.

[DISPLAY]
MAX_LINEAR_VELOCITY = 4.000000


Thanks Leon82

Nice,

I've got an x3 also but haven't gone over 2 on my velocity yet

Perhaps something like a homing macro works outside of axis so it's not governed by that parameter