Setup of a MPG for gantry
28 May 2013 01:31 #34775
by malare
Setup of a MPG for gantry was created by malare
How do you setup a MPG to work in World mode so you can jog a gantry x-axle?
All other axes works fine to jog with the MPG.
Many regards Per Malare
All other axes works fine to jog with the MPG.
Many regards Per Malare
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28 May 2013 08:08 #34805
by andypugh
It ought to just work (in World mode). You really don't want to be jogging a gantry in Joint mode.
How have you connected the MPG in HAL?
Replied by andypugh on topic Setup of a MPG for gantry
How do you setup a MPG to work in World mode so you can jog a gantry x-axle?
All other axes works fine to jog with the MPG.
It ought to just work (in World mode). You really don't want to be jogging a gantry in Joint mode.
How have you connected the MPG in HAL?
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28 May 2013 15:51 #34815
by malare
Replied by malare on topic Setup of a MPG for gantry
I can only send you the hal-file so you can look at it. I don't really know myself how things are done.
It's my son who is an expert on these things. He has used a file we found as a template, and made changes in it.
As you can see from the file-name we use a MESA 5i25 card for driving Gecko G540 drivers but the MPG is connected to an extra PCI parallell card.
Many regards Per Malare
It's my son who is an expert on these things. He has used a file we found as a template, and made changes in it.
As you can see from the file-name we use a MESA 5i25 card for driving Gecko G540 drivers but the MPG is connected to an extra PCI parallell card.
Many regards Per Malare
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28 May 2013 16:03 #34816
by malare
Replied by malare on topic Setup of a MPG for gantry
There was another hal-file too 
Perhaps the ini-file is useful too
Many regards Per Malare
Perhaps the ini-file is useful too
Many regards Per Malare
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28 May 2013 20:31 #34836
by andypugh
Replied by andypugh on topic Setup of a MPG for gantry
i will need to experiment with a configuration, which I can't do until this evening.
(I can see a way to do it, but I think it might be the wrong way)
(I can see a way to do it, but I think it might be the wrong way)
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30 May 2013 07:55 #34939
by andypugh
It took longer than I expected to get to this.
I have created a simulator config which I can test with. I can confirm that it won't jog for me in World mode either. (thou in my case I can't jog any axis)
Unfortunately I am out of time for tonight. More tomorrow.
Replied by andypugh on topic Setup of a MPG for gantry
i will need to experiment with a configuration, which I can't do until this evening.
(I can see a way to do it, but I think it might be the wrong way)
It took longer than I expected to get to this.
I have created a simulator config which I can test with. I can confirm that it won't jog for me in World mode either. (thou in my case I can't jog any axis)
Unfortunately I am out of time for tonight. More tomorrow.
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30 May 2013 08:12 #34940
by andypugh
Replied by andypugh on topic Setup of a MPG for gantry
A bit more on this.
www.linuxcnc.org/docs/html/man/man9/gantrykins.9.html
Says that incremental jogging doesn't work in World mode.
I think there is a way round this, using the jogwheel speed as a velocity-jogging request. But I need some time to see what that takes.
www.linuxcnc.org/docs/html/man/man9/gantrykins.9.html
Says that incremental jogging doesn't work in World mode.
I think there is a way round this, using the jogwheel speed as a velocity-jogging request. But I need some time to see what that takes.
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01 Jul 2013 01:23 #36178
by malare
Replied by malare on topic Setup of a MPG for gantry
Have you had time to look into it?
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01 Jul 2013 07:07 #36181
by andypugh
Yes, and no. I have had the time. But I forgot. I feel rather guilty now.
I have taken on a big chunk of work on re-coding how LinuxCNC handles tools. I expect to be busy with that for many months now.
Is my idea of using the encoder velocity to control a velocity-mode jog enough of a clue to get you started by yourself?
Look at the halui.jog.N.analog pins here:
www.linuxcnc.org/docs/html/man/man1/halui.1.html
Replied by andypugh on topic Setup of a MPG for gantry
Have you had time to look into it?
Yes, and no. I have had the time. But I forgot. I feel rather guilty now.
I have taken on a big chunk of work on re-coding how LinuxCNC handles tools. I expect to be busy with that for many months now.
Is my idea of using the encoder velocity to control a velocity-mode jog enough of a clue to get you started by yourself?
Look at the halui.jog.N.analog pins here:
www.linuxcnc.org/docs/html/man/man1/halui.1.html
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