soft limit error after x homing, does not home y

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1 year 5 months ago #327708 by Micro2000
 

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I keep getting a soft max and min limit after homing x and stops the homing all process, after homing it gives "Exceeded POSITIVE soft limit (4.80000) on joint 0" i can neither move x or y axis, can move z axis, I can home y axis, but then I cant move z axis after that.I have the axis version of linuxcnc 2.9.0 on plasma KDE desktop. 

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1 year 5 months ago #327713 by tommylight
Upload hal and ini files here so we can have a look.

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1 year 5 months ago #327720 by Micro2000
 

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1 year 5 months ago #327721 by PCW
Looks like your min and max limits on X and Y (and joints 0,1) are reversed.
 

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1 year 5 months ago #327735 by Micro2000
Yes, because whenever I flip it the bed homes in the opposite direction, maybe I'm doing something wrong, but that was the solution i found until now

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1 year 5 months ago #327736 by PCW
You need to change the home search direction for that.

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1 year 5 months ago #327795 by Micro2000
it does not change, it still homes in the same direction. only flipping the positive and negative in the table length changes the direction.

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1 year 5 months ago #327828 by PCW
If the homing direct does not change, then it's likely the you did not
change the correct ini constant (or perhaps there is another error in
the ini file homing constants or perhaps home switch operation)

I don't think you can eliminate the soft limits issue unless you get the
MIN_LIMIT and MAX_LIMIT setup properly (MIN_LIMIT < MAX_LIMIT)

It may also be the you have the hardware directions reversed, this you can
fix by inverting the direction pin or changing the sign of the joint SCALE
ini constant. (say 4000 to -4000)

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1 year 5 months ago #327886 by Micro2000
Where would I need to go to change the scale

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1 year 5 months ago #327887 by PCW
#*** AXIS_X *******************************
[AXIS_X]
MAX_VELOCITY = 0.5
MAX_ACCELERATION = 0.2
MIN_LIMIT = 4.8
MAX_LIMIT = -4.8

[JOINT_0]
TYPE = LINEAR
HOME = 0.0
MIN_LIMIT = 4.8
MAX_LIMIT = -4.8
MAX_VELOCITY = 0.5
MAX_ACCELERATION = 0.2
STEPGEN_MAXACCEL = 0.25
SCALE = 4000.0
FERROR = 0.05
MIN_FERROR = 0.01
HOME_OFFSET = -4.500000
HOME_SEARCH_VEL = 0.100000
HOME_LATCH_VEL = -0.100000
HOME_IGNORE_LIMITS = YES
HOME_SEQUENCE = 1
#******************************************

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