Unlimited rotary axis

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16 Jul 2018 18:05 #114324 by jsskangas
Replied by jsskangas on topic Unlimited rotary axis
Well it does not work.
I tried it again 1 minute ago.

If it works as you mentioned, this is what I'm looking for.
I need it to operate as it now does and end up where ever after 5-axis operation.
But when i call c0. it would find closest way to 0 position.


"You don't want 360 and 720 to be exactly the same"
Some of our clients machines work this way, I don't see any issues with it.
I just needed to do post that can handle it.
Machine was Mikron HPM 800 , with iTNC530 control.

There are several different ways to handle rotary axis:
Okuma uses M codes for rotation direction and axis values are 0-360.

Some uses magnitude to control rotation direction, some uses sign (+-) for same thing.

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16 Jul 2018 18:53 #114328 by jsskangas
Replied by jsskangas on topic Unlimited rotary axis
Could it be cause I'm running 2.8 pre.
where joint and axis are separated and this functionality was not included?

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16 Jul 2018 18:55 - 16 Jul 2018 18:55 #114329 by andypugh
Replied by andypugh on topic Unlimited rotary axis

Well it does not work.
I tried it again 1 minute ago.


Which version of LinuxCNC are you using, and where dos you add the WRAPPED_ROTARY line?


If it works as you mentioned, this is what I'm looking for.
I need it to operate as it now does and end up where ever after 5-axis operation.
But when i call c0. it would find closest way to 0 position..


I just set up a simulator with A-axis as WRAPPED_ROTARY and B-axis as normal.

G91 G0 A810 B810 => both motor-pos-cmd pins = 810
G90 G0 A-0 B-0 => joint.3.motor-pos-cmd = 720, joint.4.motor-pos-cmd = 0.

So it does work. Are you testing with an actual rotary? The wrapped rotary will show 0 on the DRO even though the motor-pos-cmd is 720.
Last edit: 16 Jul 2018 18:55 by andypugh.

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16 Jul 2018 18:56 #114330 by andypugh
Replied by andypugh on topic Unlimited rotary axis

Could it be cause I'm running 2.8 pre.
where joint and axis are separated and this functionality was not included?


I just tested it on 2.8.

WRAPPED_ROTARY has to go in the [AXIS] section. (Which I think is probably wrong..)
The following user(s) said Thank You: jsskangas

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16 Jul 2018 20:32 - 16 Jul 2018 20:35 #114338 by jsskangas
Replied by jsskangas on topic Unlimited rotary axis
Magic word was [AXIS] section.
I had it in [JOINT] section.

Yes, Im running Nikken 5ax120, for C axis i need this.

It work as I like it.
Sing determines rotation direction and degrees are from 0 to 360.
With this one I can live with.
Thanks
Last edit: 16 Jul 2018 20:35 by jsskangas.

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