Joining two motors
03 Aug 2020 11:19 #177028
by bevins
Replied by bevins on topic 2 motors on one axis
Since when does pncconf do dual motor gantries?
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- tommylight
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03 Aug 2020 11:22 #177029
by tommylight
Replied by tommylight on topic 2 motors on one axis
Cant say for sure since i do not use it very often, but at least 6 months that i know of.
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- Aldenflorio
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03 Aug 2020 14:11 - 03 Aug 2020 14:12 #177040
by Aldenflorio
Replied by Aldenflorio on topic 2 motors on one axis
I will be putting the limit switches on today. I see numbers, and I’ll have to post my config files in a couple hours. I’m not with my machine now
Last edit: 03 Aug 2020 14:12 by Aldenflorio.
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03 Aug 2020 16:00 - 03 Aug 2020 16:01 #177051
by Clive S
Its the homing switches that are needed for dual axis but they can also be used as combined home and limit and then setup soft limits.
linuxcnc.org/docs/2.8/html/config/ini-homing.html
Replied by Clive S on topic 2 motors on one axis
I will be putting the limit switches on today. I see numbers, and I’ll have to post my config files in a couple hours. I’m not with my machine now
Its the homing switches that are needed for dual axis but they can also be used as combined home and limit and then setup soft limits.
linuxcnc.org/docs/2.8/html/config/ini-homing.html
Last edit: 03 Aug 2020 16:01 by Clive S.
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03 Aug 2020 16:29 #177053
by cmorley
Replied by cmorley on topic 2 motors on one axis
A long time, though I havent got real world tested feedback much.
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03 Aug 2020 16:31 #177055
by cmorley
Replied by cmorley on topic 2 motors on one axis
It's still a configuration problem, as you should't be able to single joint jog a dual axis machine by default.
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03 Aug 2020 16:44 #177056
by tommylight
Replied by tommylight on topic 2 motors on one axis
No feedback = good !A long time, though I havent got real world tested feedback much.
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10 Aug 2020 01:47 - 10 Aug 2020 01:48 #177786
by Aldenflorio
Replied by Aldenflorio on topic 2 motors on one axis
sorry for the late reply it took longer then i though it would. here are my configuration files. i think
Last edit: 10 Aug 2020 01:48 by Aldenflorio.
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10 Aug 2020 06:59 #177795
by tommylight
Replied by tommylight on topic 2 motors on one axis
In the ini file there are missing
HOME_SEQUENCE = -2
entries for all joints, -2 should be for both of the tandem joints while X and Z in your case should be 0 and 1 respectively.
In the hal file, delete the ....maxerror......=0.005 lines.
HOME_SEQUENCE = -2
entries for all joints, -2 should be for both of the tandem joints while X and Z in your case should be 0 and 1 respectively.
In the hal file, delete the ....maxerror......=0.005 lines.
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10 Aug 2020 07:14 #177797
by cmorley
Replied by cmorley on topic 2 motors on one axis
What version of linuxcnc are you using?
It seems there are two things I see that are not quite right in the INI:
KINEMATICS = trivkins coordinates=XYYZ kinstype=BOTH
This allows individual jogging of joints before homing.
drop the 'kinstype=BOTH' to disallow individual joint jogging (so the docs say)
also the there are no home sequence entries for the joints.
the Y and Y2 should have it so they jog together.
J0 HOME_SEQUENCE = 2
J1 HOME_SEQUENCE = -1
J2 HOME_SEQUENCE = -1
J3 HOME_SEQUENCE = 2
I think that would fix things (test carefully)
It seems there are two things I see that are not quite right in the INI:
KINEMATICS = trivkins coordinates=XYYZ kinstype=BOTH
This allows individual jogging of joints before homing.
drop the 'kinstype=BOTH' to disallow individual joint jogging (so the docs say)
also the there are no home sequence entries for the joints.
the Y and Y2 should have it so they jog together.
J0 HOME_SEQUENCE = 2
J1 HOME_SEQUENCE = -1
J2 HOME_SEQUENCE = -1
J3 HOME_SEQUENCE = 2
I think that would fix things (test carefully)
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