Thanks Andy;
The setp mode 1 stopped the negative jumps.
I also went with 4x mode. I went with the A phase only thinking it may
reduce
process overhead and allow higher spindle speeds. The more I thought the
less
I believed it.
I still have a similar symptom, as follows:
- motiom.spindle-speed-in and
- signals-spindle-velocity
are jumping around together (always in proper polarity) depending on spindle
RPM (10 to 200). How often and how far they jump is a function of
speed with no correlation to the speed; as if the signal processing was not
synchronized with the input encoder signals.
The .hal configuration is as follows:
addf encoder.update-counters base-thread
addf encoder.capture-position servo-thread
setp encoder.0.position-scale 200
#setp encoder.0.x4-mode 1 (Is Defaulted true)
net spindle-index-enable encoder.0.index-enable <=>
motion.spindle-index-enable
net spindle-phase-b motenc.0.in-05-not => encoder.0.phase-B
net spindle-phase-a motenc.0.in-06-not => encoder.0.phase-A
net spindle-index motenc.0.in-07-not => encoder.0.phase-Z
net spindle-position encoder.0.position => motion.spindle-revs
net spindle-velocity encoder.0.velocity => motion.spindle-speed-in
I appreciate any HELP, before all my hair is pulled out.
Thanks
Don
On Sat, Jul 10, 2010 at 3:25 PM, Andy Pugh <a...@andypugh.fsnet.co.uk>wrote:
> On 10 July 2010 19:43, Don Stanley <dstanley1...@gmail.com> wrote:
>
> > Can anyone see the problem; or have a solution?
>
> Try
> setp encoder.0.counter-mode 1
>
> A then not A then A with no B looks like an oscillating spindle, you
> need to tell it to not even look at B.
> (Incidentally, if you can afford a pin then having B might be useful,
> you get 4x the resolution)
>
> --
> atp
>
>
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