Z axis cuts in the air - not plunging

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6 years 1 month ago #180910 by Jeff65
Hi everyone I really appreciate the help by the way. INI and Hal files below

# Generated by stepconf 1.1 at Sun Aug 30 18:04:07 2020
# If you make changes to this file, they will be
# overwritten when you run stepconf again
loadrt trivkins
loadrt [EMCMOT]EMCMOT base_period_nsec=[EMCMOT]BASE_PERIOD servo_period_nsec=[EMCMOT]SERVO_PERIOD num_joints=[TRAJ]AXES
loadrt hal_parport cfg="0 out"
setp parport.0.reset-time 1500
loadrt stepgen step_type=0,0,0
loadrt charge_pump
net estop-out charge-pump.enable iocontrol.0.user-enable-out
net charge-pump <= charge-pump.out

addf parport.0.read base-thread
addf stepgen.make-pulses base-thread
addf charge-pump base-thread
addf parport.0.write base-thread
addf parport.0.reset base-thread

addf stepgen.capture-position servo-thread
addf motion-command-handler servo-thread
addf motion-controller servo-thread
addf stepgen.update-freq servo-thread
net spindle-cmd-rpm <= motion.spindle-speed-out
net spindle-cmd-rpm-abs <= motion.spindle-speed-out-abs
net spindle-cmd-rps <= motion.spindle-speed-out-rps
net spindle-cmd-rps-abs <= motion.spindle-speed-out-rps-abs
net spindle-at-speed => motion.spindle-at-speed
net spindle-cw <= motion.spindle-forward

net estop-out => parport.0.pin-01-out
net xstep => parport.0.pin-02-out
setp parport.0.pin-02-out-reset 1
net xdir => parport.0.pin-03-out
net ystep => parport.0.pin-04-out
setp parport.0.pin-04-out-reset 1
net ydir => parport.0.pin-05-out
net zstep => parport.0.pin-06-out
setp parport.0.pin-06-out-reset 1
net zdir => parport.0.pin-07-out
net astep => parport.0.pin-08-out
setp parport.0.pin-08-out-reset 1
net adir => parport.0.pin-09-out
net spindle-cw => parport.0.pin-14-out
net charge-pump => parport.0.pin-16-out
net xenable => parport.0.pin-17-out
net all-home <= parport.0.pin-10-in

setp stepgen.0.position-scale [AXIS_0]SCALE
setp stepgen.0.steplen 1
setp stepgen.0.stepspace 0
setp stepgen.0.dirhold 29551
setp stepgen.0.dirsetup 29551
setp stepgen.0.maxaccel [AXIS_0]STEPGEN_MAXACCEL
net xpos-cmd axis.0.motor-pos-cmd => stepgen.0.position-cmd
net xpos-fb stepgen.0.position-fb => axis.0.motor-pos-fb
net xstep <= stepgen.0.step
net xdir <= stepgen.0.dir
net xenable axis.0.amp-enable-out => stepgen.0.enable
net all-home => axis.0.home-sw-in

setp stepgen.1.position-scale [AXIS_1]SCALE
setp stepgen.1.steplen 1
setp stepgen.1.stepspace 0
setp stepgen.1.dirhold 29551
setp stepgen.1.dirsetup 29551
setp stepgen.1.maxaccel [AXIS_1]STEPGEN_MAXACCEL
net ypos-cmd axis.1.motor-pos-cmd => stepgen.1.position-cmd
net ypos-fb stepgen.1.position-fb => axis.1.motor-pos-fb
net ystep <= stepgen.1.step
net ydir <= stepgen.1.dir
net yenable axis.1.amp-enable-out => stepgen.1.enable
net all-home => axis.1.home-sw-in

setp stepgen.2.position-scale [AXIS_2]SCALE
setp stepgen.2.steplen 1
setp stepgen.2.stepspace 0
setp stepgen.2.dirhold 29551
setp stepgen.2.dirsetup 29551
setp stepgen.2.maxaccel [AXIS_2]STEPGEN_MAXACCEL
net zpos-cmd axis.2.motor-pos-cmd => stepgen.2.position-cmd
net zpos-fb stepgen.2.position-fb => axis.2.motor-pos-fb
net zstep <= stepgen.2.step
net zdir <= stepgen.2.dir
net zenable axis.2.amp-enable-out => stepgen.2.enable
net all-home => axis.2.home-sw-in

net estop-out <= iocontrol.0.user-enable-out
net estop-out => iocontrol.0.emc-enable-in

loadusr -W hal_manualtoolchange
net tool-change iocontrol.0.tool-change => hal_manualtoolchange.change
net tool-changed iocontrol.0.tool-changed <= hal_manualtoolchange.changed
net tool-number iocontrol.0.tool-prep-number => hal_manualtoolchange.number
net tool-prepare-loopback iocontrol.0.tool-prepare => iocontrol.0.tool-prepared

# Generated by stepconf 1.1 at Sun Aug 30 18:04:07 2020
# If you make changes to this file, they will be
# overwritten when you run stepconf again

[EMC]
MACHINE = my-mill
DEBUG = 0

[DISPLAY]
DISPLAY = axis
EDITOR = gedit
POSITION_OFFSET = RELATIVE
POSITION_FEEDBACK = ACTUAL
ARCDIVISION = 64
GRIDS = 10mm 20mm 50mm 100mm 1in 2in 5in 10in
MAX_FEED_OVERRIDE = 1.2
MIN_SPINDLE_OVERRIDE = 0.5
MAX_SPINDLE_OVERRIDE = 1.2
DEFAULT_LINEAR_VELOCITY = 5.00
MIN_LINEAR_VELOCITY = 0
MAX_LINEAR_VELOCITY = 20.00
INTRO_GRAPHIC = linuxcnc.gif
INTRO_TIME = 5
PROGRAM_PREFIX = /home/jeff65/linuxcnc/nc_files
INCREMENTS = 5mm 1mm .5mm .1mm .05mm .01mm .005mm

[FILTER]
PROGRAM_EXTENSION = .png,.gif,.jpg Greyscale Depth Image
PROGRAM_EXTENSION = .py Python Script
png = image-to-gcode
gif = image-to-gcode
jpg = image-to-gcode
py = python

[TASK]
TASK = milltask
CYCLE_TIME = 0.010

[RS274NGC]
PARAMETER_FILE = linuxcnc.var

[EMCMOT]
EMCMOT = motmod
COMM_TIMEOUT = 1.0
COMM_WAIT = 0.010
BASE_PERIOD = 37851
SERVO_PERIOD = 1000000

[HAL]
HALFILE = my-mill.hal
HALFILE = custom.hal
POSTGUI_HALFILE = custom_postgui.hal

[TRAJ]
AXES = 3
COORDINATES = X Y Z
LINEAR_UNITS = mm
ANGULAR_UNITS = degree
CYCLE_TIME = 0.010
DEFAULT_VELOCITY = 2.00
MAX_VELOCITY = 20.00

[EMCIO]
EMCIO = io
CYCLE_TIME = 0.100
TOOL_TABLE = tool.tbl

[AXIS_0]
TYPE = LINEAR
HOME = 5
MAX_VELOCITY = 12.5492060976
MAX_ACCELERATION = 13.0
STEPGEN_MAXACCEL = 16.25
SCALE = -2000.0
FERROR = 1
MIN_FERROR = .25
MIN_LIMIT = 0
MAX_LIMIT = 168
HOME_USE_INDEX = NO
HOME_OFFSET = 3
HOME_SEARCH_VEL = 1.000000
HOME_LATCH_VEL = 0.050000
HOME_FINAL_VEL = 2
HOME_SEQUENCE = 1

[AXIS_1]
TYPE = LINEAR
HOME = 5
MAX_VELOCITY = 12.5492060976
MAX_ACCELERATION = 13.0
STEPGEN_MAXACCEL = 16.25
SCALE = -2000.0
FERROR = 1
MIN_FERROR = .25
MIN_LIMIT = 0
MAX_LIMIT = 79
HOME_USE_INDEX = NO
HOME_OFFSET = 3
HOME_SEARCH_VEL = 1.000000
HOME_LATCH_VEL = 0.050000
HOME_FINAL_VEL = 2
HOME_SEQUENCE = 2

[AXIS_2]
TYPE = LINEAR
HOME = 0
MAX_VELOCITY = 12.5492060976
MAX_ACCELERATION = 13.0
STEPGEN_MAXACCEL = 16.25
SCALE = 2000.0
FERROR = 1
MIN_FERROR = .25
MIN_LIMIT = -75
MAX_LIMIT = 0.001
HOME_OFFSET = -64
HOME_SEARCH_VEL = 1.000000
HOME_LATCH_VEL = 0.050000
HOME_FINAL_VEL = 2
HOME_SEQUENCE = 0

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6 years 1 month ago #180911 by Clive S
Ok I see you have changed back some of the setting in the Z axis

[AXIS_2]
TYPE = LINEAR
HOME = 0
MAX_VELOCITY = 12.5492060976
MAX_ACCELERATION = 13.0
STEPGEN_MAXACCEL = 16.25
SCALE = 2000.0
FERROR = 1
MIN_FERROR = .25
MIN_LIMIT = -75
MAX_LIMIT = 0.001
HOME_OFFSET = -64
HOME_SEARCH_VEL = 1.000000
HOME_LATCH_VEL = 0.050000
HOME_FINAL_VEL = 2
HOME_SEQUENCE = 0

home_offset change it back to -2

Lets just concentrate on the z first. does it jog correctly before homing . ie page down z down

If you change anything please say what you have done otherwise we are in the dark.

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6 years 1 month ago #180914 by Jeff65
At the moment the Z axis is moving the way it should - page up it goes up and page down it goes down and on the screen the same is apparent.

Its just when i try to home it goes off in the wrong direction

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6 years 1 month ago #180915 by Clive S

Jeff65 wrote: At the moment the Z axis is moving the way it should - page up it goes up and page down it goes down and on the screen the same is apparent.

Its just when i try to home it goes off in the wrong direction


ok that's good. now change the sign on home_search vel ie put a - in front of the 2

did you change the home offset to -2

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6 years 1 month ago #180916 by Jeff65
OK will do some stuff soon but I have lots of things happening here - family and kids etc
will get a breathing space soon

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6 years 1 month ago - 6 years 1 month ago #180918 by Clive S

Jeff65 wrote: OK will do some stuff soon but I have lots of things happening here - family and kids etc
will get a breathing space soon


I take it that you do reload the axis after you make changes to the ini file
Last edit: 6 years 1 month ago by Clive S.

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