going past Limit + home switch when trying to home

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18 Jun 2021 22:24 #212360 by Craig E
they show up on the screen when active (looks like a symbol for a Capacitor) and go out when not active and it matches the switches but and the lights go out on the Mesa board but I did not look at Halshow

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19 Jun 2021 04:06 - 19 Jun 2021 04:08 #212383 by PCW
BTW Z is homed first because it has the lowest home sequence number = 0
X is next with 1 and then Y/Y1

Its common to home Z first so any tooling is at a safe
height before moving X or Y.

Note that Z is missing a valid home offset value
Last edit: 19 Jun 2021 04:08 by PCW.

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19 Jun 2021 13:32 #212400 by Craig E
All my axis are setup the same with the exception of the Home value. Do I have them all wrong. here is the X example Home = 10 and home offset = 0. if I understand you, I should make all the Home offsets 10 and Home =0 since i am using Home + Limit?
and should I change HOME_IGNORE_LIMITS = YES to = NO?

[AXIS_X]
MAX_VELOCITY = 1.0
MAX_ACCELERATION = 30.0
MIN_LIMIT = -0.0
MAX_LIMIT = 42.0

[JOINT_0]
TYPE = LINEAR
HOME = 10.0
FERROR = 0.5
MIN_FERROR = 0.05
MAX_VELOCITY = 1.0
MAX_ACCELERATION = 30.0
# 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 = 1.25
STEPGEN_MAXACCEL = 37.50
P = 500.0
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 = 10000
DIRHOLD = 10000
STEPLEN = 10000
STEPSPACE = 10000
STEP_SCALE = 8127.9997
MIN_LIMIT = -0.0
MAX_LIMIT = 42.0
HOME_OFFSET = 0.000000
HOME_SEARCH_VEL = -0.050000
HOME_LATCH_VEL = 0.016667
HOME_FINAL_VEL = 0.016667
HOME_USE_INDEX = NO
HOME_IGNORE_LIMITS = YES
HOME_SEQUENCE = 1

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19 Jun 2021 15:10 #212407 by PCW
No, that should be correct (I mixed up home offset and home)
Home offset is the value at the home switch, home must not match
the home offset value if you have shared home/limit switches

You need home_ignore_limits when you are using shared home/limit switches

do Z jogs work correctly? that is, is, is it possible you don't have control of Z direction
(you might try the X axis by setting its home_sequence to 0 and Z's home_sequence to 1)

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19 Jun 2021 16:34 #212421 by Craig E
Yes that is how I found my wiring error I have min+Home and Max limit was showing. I am still totally new to CNC and LinuxCNC. So I am clueless on all the setup I just keep working on one problem at a time.

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