Axis Y two motors gantry with separate switch home-offset
20 Jul 2019 17:07 - 20 Jul 2019 17:08 #139980
by Maxardi99
Hi,
i add gantry function in my configuration. Now i want make homing with separate home-offset for each motor of axis y. How can i do this ? i tried with KINS function but homing and motor velocity doesn't work anymore...
i add gantry function in my configuration. Now i want make homing with separate home-offset for each motor of axis y. How can i do this ? i tried with KINS function but homing and motor velocity doesn't work anymore...
Last edit: 20 Jul 2019 17:08 by Maxardi99.
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20 Jul 2019 17:36 #139986
by tommylight
Replied by tommylight on topic Axis Y two motors gantry with separate switch home-offset
The homing_sequence has to be -1 for both joints on the Y axis.
You can use -2 for Z axis to have it retract before moving X and Y axis.
Use the Home All for homing, not separate homing when starting the machine.
You can use -2 for Z axis to have it retract before moving X and Y axis.
Use the Home All for homing, not separate homing when starting the machine.
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21 Jul 2019 01:10 #140026
by rodw
Replied by rodw on topic Axis Y two motors gantry with separate switch home-offset
Tommy and I are assuming you are using either V 2.8 or V 2.9
Say your Y axis gantry was 1.0mm out of square.
All you need to do is have HOME-OFFSET set to -3 on one side and -4 on the other side. The axis will be squared on homing.
This will not work in V 2.7 as it depends on features introduced in V 2.8.
Say your Y axis gantry was 1.0mm out of square.
All you need to do is have HOME-OFFSET set to -3 on one side and -4 on the other side. The axis will be squared on homing.
This will not work in V 2.7 as it depends on features introduced in V 2.8.
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21 Jul 2019 10:04 #140061
by tommylight
Replied by tommylight on topic Axis Y two motors gantry with separate switch home-offset
From the ini it looks like 2.7 or lower, there is no version entry. That will not work for gantry squaring.
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21 Jul 2019 10:45 #140064
by rodw
In that case, I would upgrade to V 2.8 by folllowing the instructions on the build bot buildbot.linuxcnc.org/
However, if its a plasma table, I'd go straight to V 2.9 to get the reverse run.
Replied by rodw on topic Axis Y two motors gantry with separate switch home-offset
From the ini it looks like 2.7 or lower, there is no version entry. That will not work for gantry squaring.
In that case, I would upgrade to V 2.8 by folllowing the instructions on the build bot buildbot.linuxcnc.org/
However, if its a plasma table, I'd go straight to V 2.9 to get the reverse run.
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21 Jul 2019 17:50 - 21 Jul 2019 17:50 #140093
by pl7i92
Replied by pl7i92 on topic Axis Y two motors gantry with separate switch home-offset
can somone who ownes a gantry setup like this plese post a full ini and hal on this
doesent matter what board
is the behavior diffferent on switch position max or min
doesent matter what board
is the behavior diffferent on switch position max or min
Last edit: 21 Jul 2019 17:50 by pl7i92.
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24 Jul 2019 17:44 #140445
by Maxardi99
Replied by Maxardi99 on topic Axis Y two motors gantry with separate switch home-offset
exactly, what should i do to upgrate my linuxcnc ? i dont understand what i have to do..
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24 Jul 2019 19:17 #140459
by tommylight
Replied by tommylight on topic Axis Y two motors gantry with separate switch home-offset
Buildbot.linuxcnc.org
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25 Jul 2019 10:51 - 25 Jul 2019 10:57 #140521
by BigJohnT
Why would you want reverse run for a plasma table?
JT
Replied by BigJohnT on topic Axis Y two motors gantry with separate switch home-offset
However, if its a plasma table, I'd go straight to V 2.9 to get the reverse run.
Why would you want reverse run for a plasma table?
JT
Last edit: 25 Jul 2019 10:57 by BigJohnT.
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25 Jul 2019 11:02 #140522
by tommylight
Replied by tommylight on topic Axis Y two motors gantry with separate switch home-offset
It is very helpful to have it for cases where the arc is lost during a cut or due to plasma overheating, you can just back off a bit and resume cutting.
Without it the procedure would be to run from line after choosing a straigh line somewhere before the arc was lost.
When cuting straight lines that is no issue at all, but when cutting art there are usually a lot of arcs involved.
Not a deal breaker in any way, just nice to have.
Without it the procedure would be to run from line after choosing a straigh line somewhere before the arc was lost.
When cuting straight lines that is no issue at all, but when cutting art there are usually a lot of arcs involved.
Not a deal breaker in any way, just nice to have.
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