correction on myself... magnescale, not magnetron. guess the morning
caffeine hasnt kicked in yet.
On Dec 16, 2007 7:51 AM, Jim Coleman <[EMAIL PROTECTED]> wrote:
>
> the part that concerned me was the name of the DRO, magnetron. wasnt sure
> if it used magnetics as opposed to the optical, so i dont know if it would
> be ttl or some analog signal or what. and my oscilloscope was through a
> flood and i dont even know if it still works, i havnt even cleaned all of
> the mud and gunk out of it caus im afraid of how it'll look in there. and
> without a scope to use, i dont really know how i should start tryin to
> figure it out.
>
>
>
> On Dec 15, 2007 11:00 PM, Chris Morley <[EMAIL PROTECTED]> wrote:
>
> >
> > Though I am not sure about sony scales, if it produces TTL compatible,
> > square edged pulses in quadrature then yes. I remember seeing an ebay ad
> > for scales that were compatible with sony's dro (and others) and they were
> > TTL square edged pulses, so probably they would work. If the scales use
> > current or voltage sin wave signals (such as some heidenhain , older
> > acu-rite with d9 plugs and others) or some other scheme then a conversion
> > 'blackbox' is needed. Then nice thing about the sin wave signals is that the
> > conversion 'blackbox' can multiply the resolution by factors such as
> > x1,x5,x10,x25 etc. I tried to find good info on sony scales a while back and
> > had little success- I don't own any so I didn't try that hard...
> > ________________________________
> > > Date: Sat, 15 Dec 2007 21:03:22 -0500
> > > From: [EMAIL PROTECTED]
> > > To: emc-users@lists.sourceforge.net
> > > Subject: Re: [Emc-users] DRO with VFD-acurite scales-index
> > >
> > > anyone happen to know anything about sony magnescale DROs? would it
> > be possible to interface the scales on my lathe to emc to work as a dro?
> > one of the axis on the sony are dead.
> > >
> > > On Dec 15, 2007 8:49 PM, Dave Engvall < [EMAIL PROTECTED]> wrote:
> > > This may get you started:
> > >
> > > http://www.acu-rite.com/index.cfm?PageID=56ABA3A7-F620-11D4-
> > > BC6400A0CC271CB6
> > >
> > > From there you can get the details on which scale you have.
> > > Good luck.
> > >
> > > Dave
> > > On Dec 15, 2007, at 5:16 PM, Chris Morley wrote:
> > >
> > >>
> > >> Some acu-rite scales have index pulses,some have the wire and no
> > >> pulse, some use an 'absolute' distance coded marks so when u move
> > >> maybe and inch or so it will know exactly where it is (after the
> > >> dro/controller evaluates with an algorithm) . Heidenhain more
> > >> commonly has two indexes or the distances coded marks . Anilam
> > >> sometimes have index pulses. What model and plug style do u have?
> > >> ( round or D9). if u include the serial# of reader and scale I
> > >> might be able to look it up.
> > >>
> > >>
> > >> Chris Morley
> > >>
> > >>
> > >>
> > >> ----------------------------------------
> > >>> From: [EMAIL PROTECTED]
> > >>> To: emc-users@lists.sourceforge.net
> > >>> Date: Sat, 15 Dec 2007 11:02:18 -0800
> > >>> Subject: Re: [Emc-users] DRO with VFD
> > >>>
> > >>> On Sat, 2007-12-15 at 10:32 -0800, Kirk Wallace wrote:
> > >>>> On Fri, 2007-12-14 at 23:29 -0500, Stephen Wille Padnos wrote:
> > >>>>> Hi Kirk
> > >>>>>
> > >>>>> Your fast period is way too fast to do a PPMC read/write.
> > >>>>>
> > >>>>> The PPMC update is meant to run in the servo thread, which might
> > >>>>> be 1-2
> > >>>>> KHz. The read function has to write several control bytes to the
> > >>>>> parport, then read 12 bytes for the 4 encoder registers, plus
> > other
> > >>>>> data. That will take you well beyond the 20 us base period in
> > >>>>> the HAL file.
> > >>>>>
> > >>>>> - Steve
> > >>>>
> > >>>> Steve - I put a gold star by your name. The Bridgeport VCP is
> > usable
> > >>>> now. I posted the latest files:
> > >>>>
> > >>>> http://www.wallacecompany.com/machine_shop/bridgeport/pyvcp-dro2-
> > >>>> bp2.hal
> > >>>> http://www.wallacecompany.com/machine_shop/bridgeport/pyvcp-dro2-
> > >>>> bp2.hal
> > >>>>
> > >>>> I still have the problem but spinbox is working. I found
> > >>>> that if I click the data entry box, from that point on, the up down
> > >>>> arrows ramp the numbers. It's pretty handy.
> > >>>>
> > >>>> The X axis encoder polarity happened to be wrong, so I changed the
> > >>>> ppmc.0.encoder.00.scale to a negative value, but that didn't fix
> > >>>> it. I
> > >>>> could switch the A and B wires, but I thought the encoder scale
> > >>>> should
> > >>>> have. I need to look into this a little more.
> > >>>
> > >>> Opps. I entered the encoder scale settings twice.
> > >>>
> > >>>> For anyone wanting to play with pyVCP, I found these pages helpful:
> > >>>>
> > >>>> http://www.linuxcnc.org/docs/html/hal_vcp.html
> > >>>> http://www.pythonware.com/library/tkinter/introduction/tkinter-
> > >>>> reference.htm
> > >>>> http://developer.mozilla.org/en/docs/XUL:hbox
> > >>>> http://developer.mozilla.org/en/docs/XUL_Tutorial:The_Box_Model
> > >>>>
> > >>>> I haven't been able to get a few things like the flex option to
> > work
> > >>>> yet, so I am wondering if pyVCP has a full implementation of XUL or
> >
> > >>>> Tkinter.
> > >>>
> > >>> From:
> > >>> http://www.linuxcnc.org/docs/html/hal_vcp.html#r1_5_3
> > >>>
> > >>> It says:
> > >>> "
> > >>> Inside a Hbox, you can use the , anchor=""/>, and tags to choose
> > >>> how items in the
> > >>> box behave when the window is resized. For details of how fill,
> > >>> anchor,
> > >>> and expand behave, refer to the Tk pack manual page, pack(3tk). By
> > >>> default, fill='y', anchor='center', expand='yes'.
> > >>> "
> > >>>
> > >>> It's amazing what ends up in the documentation.
> > >>>
> > >>>> It sure is fun to be able to customize the display, but I guess I
> > >>>> need
> > >>>> to get some real work done.
> > >>>>
> > >>>> (I have an "extra" wire on my Accurite linear scales, does anyone
> > >>>> know
> > >>>> if linear scales normally have an index?)
> > >>>
> > >>> --
> > >>> Kirk Wallace (California, USA
> > >>> http://www.wallacecompany.com/machine_shop/
> > >>> Hardinge HNC lathe,
> > >>> Bridgeport mill conversion, doing XY now,
> > >>> Zubal lathe conversion pending)
> > >>>
> > >>>
> > >>>
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