Re: [Emc-users] can't jog using handwheel with gantrykins

2012-08-04 Thread Chris Morley



 
  I am looking at a config from the forum, and there is quite clearly no
  acceleration limiting applied when keyboard jogging that (gantrykins)
  config.
 
 … And that is because there is no [TRAJ] DEFAULT_VELOCITY
 
 It looks like a PNCConf config, so perhaps one for Chris M.
 
 -- 
 atp

PNCconf does not configure gantrykins machines.
It would seem that PNCconf was used to get a basic config then
edited for gantrykins machine (perfectly fine).
The docs on DEFAULT_VELOCITY do not mention that it is not used
in trivalkins but is in others. We should add that.
It does mention this for DEFAULT_ACCELERATION...

It seems gantrykins is buggy? I would consider adding it to PNCconf but
didn't think it was really 100% 

Chris M
  
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Re: [Emc-users] can't jog using handwheel with gantrykins

2012-08-04 Thread Chris Morley



From: chrisinnana...@hotmail.com
To: emc-users@lists.sourceforge.net
Subject: RE: [Emc-users] can't jog using handwheel with gantrykins
Date: Sat, 4 Aug 2012 06:58:48 +








PNCconf does not configure gantrykins machines.
It would seem that PNCconf was used to get a basic config then
edited for gantrykins machine (perfectly fine).
The docs on DEFAULT_VELOCITY do not mention that it is not used
in trivalkins but is in others. We should add that.
It does mention this for DEFAULT_ACCELERATION...

Is there any documentation on using gantrykins?
I briefly looked but nothing jumped out.

Chris M

  
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Re: [Emc-users] can't jog using handwheel with gantrykins

2012-08-04 Thread Chris Morley



  The docs on DEFAULT_VELOCITY do not mention that it is not used
  in trivalkins but is in others. We should add that.
  It does mention this for DEFAULT_ACCELERATION…
 
 I don't think there is any harm in putting the parameter in the INI,
 and it can avoid this rather confusing problem.
 I just tried the sample gantry config and that shows the same problem
 if you turn the jog speed up to max.
 
  It seems gantrykins is buggy? I would consider adding it to PNCconf but
  didn't think it was really 100%
 
 Gantrykins itself is perfectly OK (it isn't complicated enough to have
 bugs) but it does expose some limitations and problems with the way
 LinuxCNC handles non-trivial kins. It would almost make sense to have
 a nearly-trivial-kins setting.
 
 -- 
 atp

It doesn't hurt to add the commands in the INI other then its confusing for
users when they see them (while using trivalkins) when they don't do anything.

The sample comfig is confusing too. no comments in it :(
for instance in the TRAJ section one sees :

MAX_ANGULAR_VELOCITY = 360.00
DEFAULT_ANGULAR_VELOCITY = 36.00
MAX_LINEAR_VELOCITY = 1.00

In our docs these are all setting for AXIS in the DISPLAY section.

Are they also for the TRAJ section or are they in the wrong section?

Chris M
  
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Re: [Emc-users] can't jog using handwheel with gantrykins

2012-08-03 Thread andy pugh
On 17 July 2012 17:38, Sebastian Kuzminsky s...@highlab.com wrote:
 Incremental jogging (as with a hand wheel) doesn't work with gantrykins :-(

 Continuous jogging does, but that doesn't help you much.

I am not sure that is true either.

I am looking at a config from the forum, and there is quite clearly no
acceleration limiting applied when keyboard jogging that (gantrykins)
config. In the case of the config I am looking at this was leading to
f-errors because the stepgen access were low enough to show it.
There is acceleration limiting in a trivkins config. I find the
difference a bit puzzling.
(This is with version 2.5.1)

-- 
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Re: [Emc-users] can't jog using handwheel with gantrykins

2012-08-03 Thread andy pugh
On 3 August 2012 23:24, andy pugh bodge...@gmail.com wrote:

 I am looking at a config from the forum, and there is quite clearly no
 acceleration limiting applied when keyboard jogging that (gantrykins)
 config.

… And that is because there is no [TRAJ] DEFAULT_VELOCITY

It looks like a PNCConf config, so perhaps one for Chris M.

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[Emc-users] can't jog using handwheel with gantrykins

2012-07-17 Thread David Dyke
I have been following the gantrykins conversation recently as we have been
installing linuxcnc on a gantry machine.
There is some odd behavior with ignoring soft limits, and jumping to joint
mode at moments when it is least desirable.
I now find that the hand wheel jogging does not seem to work.
When the same file is loaded using trivkins, jogging works normally, can
anyone suggest a solution?

Dave
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Re: [Emc-users] can't jog using handwheel with gantrykins

2012-07-17 Thread Sebastian Kuzminsky
Incremental jogging (as with a hand wheel) doesn't work with gantrykins :-(

Continuous jogging does, but that doesn't help you much.

And yes, gantrykins also ignores soft limits.


On Jul 17, 2012, at 10:01 , David Dyke wrote:

 I have been following the gantrykins conversation recently as we have been
 installing linuxcnc on a gantry machine.
 There is some odd behavior with ignoring soft limits, and jumping to joint
 mode at moments when it is least desirable.
 I now find that the hand wheel jogging does not seem to work.
 When the same file is loaded using trivkins, jogging works normally, can
 anyone suggest a solution?
 
 Dave
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Re: [Emc-users] can't jog using handwheel with gantrykins

2012-07-17 Thread andy pugh
On 17 July 2012 17:38, Sebastian Kuzminsky s...@highlab.com wrote:
 Incremental jogging (as with a hand wheel) doesn't work with gantrykins :-(
...
 And yes, gantrykins also ignores soft limits.

In many cases gantrykins is a lot more trouble than it is worth. It
does allow the gantry to auto-square, but that is the only thing it
has going for it, as far as I can see.

There is certainly no point using Gantrykins in a setup with only one
set of home switches.

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