Axis Homing not working correctly?
06 Dec 2012 22:38 - 06 Dec 2012 22:49 #27312
by tjamscad
Axis Homing not working correctly? was created by tjamscad
Help I am working on a Machine that have Ubuntu 10.04 and Linuc CNC 2.5.1 and my W-axis will not home correctly. We have been trying to get this machine back on line for a few weeks now. This has not been all LinuxCNC realated the machine has been stiing for a few years. So to the problem..
We are currently using Touchy or Axis GUI's. When we tell the W-axis to home it will retract to the positive limit switch and then go negtive to the position where it started from when LinuxCNC was turned on. Any ideas?
HOME = 0.0
HOME_OFFSET = 0.0
HOME_SEARCH_VEL = 1.0
HOME_LATCH_VEL = -0.10
HOME_FINAL_VEL = 1.0
HOME_USE_INDEX = YES
HOME_IGNORE_LIMITS = YES
HOME_IS_SHARED = NO
HOME_SEQUENCE = 0
VOLATILE_HOME = 0
We are currently using Touchy or Axis GUI's. When we tell the W-axis to home it will retract to the positive limit switch and then go negtive to the position where it started from when LinuxCNC was turned on. Any ideas?
HOME = 0.0
HOME_OFFSET = 0.0
HOME_SEARCH_VEL = 1.0
HOME_LATCH_VEL = -0.10
HOME_FINAL_VEL = 1.0
HOME_USE_INDEX = YES
HOME_IGNORE_LIMITS = YES
HOME_IS_SHARED = NO
HOME_SEQUENCE = 0
VOLATILE_HOME = 0
Last edit: 06 Dec 2012 22:49 by tjamscad.
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06 Dec 2012 23:22 - 06 Dec 2012 23:23 #27313
by BigJohnT
Replied by BigJohnT on topic Axis Homing not working correctly?
Two things that stick out are your sign for search and latch are different so it will follow the first diagram
here
. Also with home and home offset set to 0 the homing must end up off of the switch. If both signs are the same then home offset is needed to move off of the switch.
John
John
Last edit: 06 Dec 2012 23:23 by BigJohnT.
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06 Dec 2012 23:59 #27314
by tjamscad
Replied by tjamscad on topic Axis Homing not working correctly?
That is how all my axis are set. I removed the Home line completely and that didn't help. I even changed to the other limit switch and added a home offset. It is like it renumbers where it was when turned on.
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07 Dec 2012 00:07 #27316
by BigJohnT
Replied by BigJohnT on topic Axis Homing not working correctly?
Stuck limit switch?
John
John
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07 Dec 2012 00:15 #27317
by tjamscad
Replied by tjamscad on topic Axis Homing not working correctly?
No sir, you can hear it make and unmake, Halscope and halmeter see it change states.
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07 Dec 2012 00:26 #27318
by BigJohnT
Replied by BigJohnT on topic Axis Homing not working correctly?
X, Y and Z home properly?
Attach your ini file if you don't mind...
John
Attach your ini file if you don't mind...
John
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07 Dec 2012 00:45 #27319
by tjamscad
Replied by tjamscad on topic Axis Homing not working correctly?
X,Y and Z work fine.
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07 Dec 2012 01:26 #27321
by BigJohnT
Replied by BigJohnT on topic Axis Homing not working correctly?
I'm pretty sure that HOME = 0 0 0 0 is not needed as well as JOINTS = 4
Other than that it looks normal except for the SHMEM_KEY = 111 thing which I've not seen before and by the comment is not needed either.
I should have looked to see who I was talking to but I sometimes fly by and slam out a reply and keep going...
John
Other than that it looks normal except for the SHMEM_KEY = 111 thing which I've not seen before and by the comment is not needed either.
I should have looked to see who I was talking to but I sometimes fly by and slam out a reply and keep going...
John
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07 Dec 2012 01:29 - 07 Dec 2012 01:30 #27322
by BigJohnT
Replied by BigJohnT on topic Axis Homing not working correctly?
I just read back and you say it has the same behavior on Axis as well. Just for a test configure the home sign for seek and latch the same for that axis and give it a home offset that will move it off of the switch and see what it does.
John
John
Last edit: 07 Dec 2012 01:30 by BigJohnT.
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07 Dec 2012 02:21 #27330
by tjamscad
This is what is in Axis now.
HOME = -1.0
HOME_OFFSET = 0.0
#HOME_SEARCH_VEL = 1.0
HOME_SEARCH_VEL = 0.1
#HOME_LATCH_VEL = -0.10
HOME_LATCH_VEL = 0.01
#HOME_FINAL_VEL = 1.0
HOME_FINAL_VEL = 0.1
HOME_USE_INDEX = YES
HOME_IGNORE_LIMITS = YES
HOME_IS_SHARED = NO
HOME_SEQUENCE = 0
VOLATILE_HOME = 0
Replied by tjamscad on topic Axis Homing not working correctly?
I just read back and you say it has the same behavior on Axis as well. Just for a test configure the home sign for seek and latch the same for that axis and give it a home offset that will move it off of the switch and see what it does.
John
This is what is in Axis now.
HOME = -1.0
HOME_OFFSET = 0.0
#HOME_SEARCH_VEL = 1.0
HOME_SEARCH_VEL = 0.1
#HOME_LATCH_VEL = -0.10
HOME_LATCH_VEL = 0.01
#HOME_FINAL_VEL = 1.0
HOME_FINAL_VEL = 0.1
HOME_USE_INDEX = YES
HOME_IGNORE_LIMITS = YES
HOME_IS_SHARED = NO
HOME_SEQUENCE = 0
VOLATILE_HOME = 0
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