Auto-Squaring with LinuxCNC v 2.8

[Clive S]

Anyway we're all back to normal now with everything squared up again. Altering the homing squaring doesn't need alterations to the software, just a tweak of the microadjustable switch actuator shown here:

Yes that is one way. But is far simpler to just edit the ini file as you can get very fine adjustments. . (This is for the benefit of others to see that the config files are just plain text)


# Generated by stepconf 1.1 at Sun Jul 1 16:50:39 2018
# If you make changes to this file, they will be overwritten when you run stepconf again
# This file has been edited

[EMC]
MACHINE = test_for_slaved_axis
DEBUG = 0
VERSION = 1.0

[DISPLAY]
DISPLAY = axis
EDITOR = gedit
POSITION_OFFSET = RELATIVE
POSITION_FEEDBACK = ACTUAL
ARCDIVISION = 64
GRIDS = 10mm 20mm 50mm 100mm
MAX_FEED_OVERRIDE = 1.2
MAX_JOG_OVERRIDE = 1.2
MIN_SPINDLE_OVERRIDE = 0.5
MAX_SPINDLE_OVERRIDE = 1.2
DEFAULT_LINEAR_VELOCITY = 2.50
MIN_LINEAR_VELOCITY = 0
MAX_LINEAR_VELOCITY = 25.00
DEFAULT_ANGULAR_VELOCITY = 2.50
MIN_ANGULAR_VELOCITY = 0
MAX_ANGULAR_VELOCITY = 25.00
INTRO_GRAPHIC = linuxcnc.gif
INTRO_TIME = 5
PROGRAM_PREFIX = /home/clive/linuxcnc/nc_files
INCREMENTS = .5mm .1mm .05mm .01mm .005mm
PYVCP = custompanel.xml


[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 = 100000
SERVO_PERIOD = 1000000

[HAL]
HALFILE = wal_slaved_axis.hal
HALFILE = custom.hal
POSTGUI_HALFILE = postgui_call_list.hal

[TRAJ]
COORDINATES = XYZ
LINEAR_UNITS = mm
ANGULAR_UNITS = degree
CYCLE_TIME = 0.010
DEFAULT_LINEAR_VELOCITY = 2.50
MAX_LINEAR_VELOCITY = 25.00

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

[KINS]
KINEMATICS = trivkins coordinates=XXYZ kinstype=BOTH
JOINTS = 4

[AXIS_X]
MAX_VELOCITY = 25.0
MAX_ACCELERATION = 750.0
MIN_LIMIT = -0.001
MAX_LIMIT = 200

[JOINT_0]
TYPE = LINEAR
# final home position machine-unit/sec
HOME = 70
MIN_LIMIT = -0.001
MAX_LIMIT = 200
MAX_VELOCITY = 25.0
MAX_ACCELERATION = 750.0
STEPGEN_MAXACCEL = 937.5
SCALE = 320
FERROR = 1
MIN_FERROR = .25

HOME_OFFSET = 0.1 # use this to square the gantry

# machine-units per sec next 3 lines
HOME_SEARCH_VEL = 10 This is the speed it searches for the home switch use a -ve number to revervse
HOME_LATCH_VEL = -6 This the the speed it use to back off the switch use a -ve to reverse
HOME_FINAL_VEL = 20 This is the speed it will travel to the final HOME position

HOME_USE_IIDEX = NO

HOME_SEQUENCE = -1 # has to be -ve for gantry

[JOINT_1]
TYPE = LINEAR
# final home position machine-unit/sec
HOME = 70
MIN_LIMIT = -0.001
MAX_LIMIT = 200
MAX_VELOCITY = 25.0
MAX_ACCELERATION = 750.0
STEPGEN_MAXACCEL = 937.5
SCALE = 320
FERROR = 1
MIN_FERROR = .25

HOME_OFFSET = 0.5 # use this to square the gantry

# machine-units per sec next 3 lines
HOME_SEARCH_VEL = 10
HOME_LATCH_VEL = -6
HOME_FINAL_VEL = 20

HOME_USE_IIDEX = NO

HOME_SEQUENCE = -1 # has to be -ve for gantry

[AXIS_Y]
MAX_VELOCITY = 25.0
MAX_ACCELERATION = 750.0
MIN_LIMIT = -0.001
MAX_LIMIT = 200.0

[JOINT_2]
TYPE = LINEAR
HOME = 0.0
MAX_VELOCITY = 25.0
STEPGEN_MAXACCEL = 937.5
SCALE = 80.0
FERROR = 1
MIN_FERROR = .25
HOME_OFFSET = 0.000000
HOME_SEARCH_VEL = 0
HOME_LATCH_VEL = 0
HOME_USE_IIDEX = NO
HOME_SEQUENCE = 0

[AXIS_Z]
MAX_VELOCITY = 25.0
MAX_ACCELERATION = 750.0
MIN_LIMIT = -100.0
MAX_LIMIT = 0.001

[JOINT_3]
TYPE = LINEAR
HOME = 0.0
MAX_VELOCITY = 25.0
STEPGEN_MAXACCEL = 937.5
SCALE = 80.0
FERROR = 1
MIN_FERROR = .25
HOME_OFFSET = 0.000000
HOME_SEARCH_VEL = 0
HOME_LATCH_VEL = 0
HOME_USE_IIDEX = NO
HOME_SEQUENCE = 0