On Thursday 30 August 2018 16:23:05 Gene Heskett wrote:
> On Thursday 30 August 2018 15:52:26 andy pugh wrote:
> > On Thu, 30 Aug 2018 at 20:27, Gene Heskett <ghesk...@shentel.net>
>
> wrote:
> > > net bedwear5 <= offset.0.fb-out => joint.0.pos-fb
> > > X-axis-track.in
> > >
> > > LinuxCNC -l fired up from a terminal, and this is logged as it
> > > quits: ./hm2-7i90-stepper.hal:262: Signal 'bedwear5' can not add
> > > OUT pin 'joint.0.pos-fb', it already has OUT pin 'offset.0.fb-out'
> > >
> > > But a search of the whole 700+ LOC can't find it.
> > > oldtimers must be setting in, I can't see the error either. Sob.
> >
> > It's on line 262, and that is probably right above, in your post.
> >
> > But what I don't understand is why it is saying that joint.0.pos-fb
> > is an OUT pin, as as far as I can tell no such pin exists.
> > http://linuxcnc.org/docs/devel/html/man/man9/motion.9.html
> > There _is_ an OUT pin that reports the position feedback with motor
> > offsets removed: joint.N.joint−pos−fb OUT FLOAT
> >
> > Your HAL, though, needs to have:
> >
> > net bedwear2 <= joint.0.motor-pos-cmd => offset.0.in
> > # cmd from motion
> > #this is corrected command to x axis
> > net bedwear3 <= offset.0.out =>
> > hm2_[HOSTMOT2](BOARD).0.stepgen.03.position-cmd
> > # thats command, now fix the offset feedback back to motion
> > net bedwear4 <=
> > hm2_[HOSTMOT2](BOARD).0.stepgen.03.position-fb => offset.0.fb-in
> > net bedwear5 <= offset.0.fb-out =>
> > joint.0.motor-pos-fb X-axis-track.in
>
> So the missing word was "motor". Fixing thar led to a duplicate error,
> elsewhere in the file, and fixing that makes it run. But now I've a
> couple chops in the skillet and the rest of dinner laid out for the
> microwave, so it will be after dinner before I get a chance to check
> it.
>
> One thing is bothering me about the halmeter readings from
> lincurve.0.out though they look as if they've been subjected to a
> large multipier, 1000 x or so and the max programmed is .x-val-01 is
> 0.0065", mainly to test the polarity of the corrections.
After getting us outside of dinner...
Next chapter; following Z motion for lincurve.0.in.
halcode:
# lincurve needs an input
net bedwear0 <= hm2_[HOSTMOT2]BOARD).0.stepgen.03.position-fb =>
joint.1.motor-pos-fb
# send the corrected fb to lincurve.0.in
net bedwear1 <= joint.1.joint-pos-fb => lincurve.0.in # is supposed
to be Z position
From man motion: I finally printed me a copy for at the machine reference
joint.N.joint−pos−fb OUT FLOAT
The joint feedback position. This value is computed from the actual
motor position minus joint offsets. Useful for machine visualization
joint.1.joint-pos-fb does not exist according to linuxcnc.
linuxcnc -l
[...]
./hm2/hm2_7i90.0: registered
./hm2-7i90-stepper.hal:255: Pin 'joint.1.joint-pos-fb' does not exist
The above is from terminal screen
Next? I'd rerun it and look for it with a halmeter, but of course it won't run.
> > --
> > atp
> > "A motorcycle is a bicycle with a pandemonium attachment and is
> > designed for the especial use of mechanical geniuses, daredevils and
> > lunatics."
> > — George Fitch, Atlanta Constitution Newspaper, 1916
> >
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--
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>
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