On Wed, Jan 26, 2011 at 9:53 PM, Erik Christiansen
wrote:
> On Wed, Jan 26, 2011 at 03:43:33PM -0600, Igor Chudov wrote:
> >
> > I finally got the table work with EMC2 (thanks to Jon), and have a
> problem
> > with is a high following error. The error is 0.04 degrees. Since there is
> a
> > consid
On Wed, Jan 26, 2011 at 03:43:33PM -0600, Igor Chudov wrote:
>
> I finally got the table work with EMC2 (thanks to Jon), and have a problem
> with is a high following error. The error is 0.04 degrees. Since there is a
> considerable reduction ratio in the work drive, the following error amounts
>
Igor Chudov wrote:
> My question is what servo tuning parameters could I use to compensate for
> high friction. It seems that I almost need FF(-1) or something like that?
>
FF1 is feedforward proportional to velocity. FF2 is feedforward
proportional to
acceleration. Neither of these will real
On Wed, 2011-01-26 at 19:37 -0600, Igor Chudov wrote:
> Steve, looks VERY nice, thanks. I will try to figure out which one I need
> (low profile or not) and will try to get one ASAP. My slight complication is
> that I have a very small computer case and fitting stuff in it is, shall I
> say, a chal
Igor Chudov wrote:
> The bad news is that the parallel port chipset that is on my new PC's
> motherboard, does not want to talk to PPMC when two encoder boards are
> installed in PPMC.
>
> The good news is that this is the problem with the motherboard's parallel
> port chipset, and the proof of it
On Wednesday, January 26, 2011 09:27:46 pm Peter C. Wallace did opine:
> On Wed, 26 Jan 2011, gene heskett wrote:
> >> The NetMOS/MOSChip chipsets are known _not_ to support EPP mode
> >> properly so will not work with Mesa/Pico/Pluto FPGA cards. They will
> >> work fine if you just want more I/O
On Wed, 26 Jan 2011, gene heskett wrote:
>>
>> The NetMOS/MOSChip chipsets are known _not_ to support EPP mode properly
>> so will not work with Mesa/Pico/Pluto FPGA cards. They will work fine
>> if you just want more I/O however.
>>
> Thanks Peter. Now, to remember that when I do want to use it,
On Wednesday, January 26, 2011 09:18:25 pm Steve Blackmore did opine:
> On Wed, 26 Jan 2011 18:48:14 -0600, you wrote:
> >Do you happen to know a PCI card that you can recommend?
>
> Hi Igor
>
> Lava cards don't use netmos chipsets, they do EPP properly and seem to
> be ultra reliable in my expe
On Wednesday, January 26, 2011 09:11:03 pm Peter C. Wallace did opine:
> On Wed, 26 Jan 2011, Igor Chudov wrote:
> > Date: Wed, 26 Jan 2011 17:33:35 -0600
> > From: Igor Chudov
> > Reply-To: "Enhanced Machine Controller (EMC)"
> >
> >
> >
> > To: "Enhanced Machine Controller (EMC)"
> > Su
Steve, looks VERY nice, thanks. I will try to figure out which one I need
(low profile or not) and will try to get one ASAP. My slight complication is
that I have a very small computer case and fitting stuff in it is, shall I
say, a challenge.
i
On Wed, Jan 26, 2011 at 7:18 PM, Steve Blackmore w
On Wed, 26 Jan 2011 18:48:14 -0600, you wrote:
>Do you happen to know a PCI card that you can recommend?
Hi Igor
Lava cards don't use netmos chipsets, they do EPP properly and seem to
be ultra reliable in my experience.
See
http://www.lavalink.com/dev/index.php?id=69
Steve Blackmore
--
---
On Wed, Jan 26, 2011 at 5:44 PM, Peter C. Wallace wrote:
> On Wed, 26 Jan 2011, Igor Chudov wrote:
>
> > Date: Wed, 26 Jan 2011 17:33:35 -0600
> > From: Igor Chudov
> > Reply-To: "Enhanced Machine Controller (EMC)"
> >
> > To: "Enhanced Machine Controller (EMC)" >
> > Subject: Re: [Emc-use
On Wednesday, January 26, 2011 06:28:34 pm Igor Chudov did opine:
> The bad news is that the parallel port chipset that is on my new PC's
> motherboard, does not want to talk to PPMC when two encoder boards are
> installed in PPMC.
>
> The good news is that this is the problem with the motherboar
On Wed, 26 Jan 2011, Igor Chudov wrote:
> Date: Wed, 26 Jan 2011 17:33:35 -0600
> From: Igor Chudov
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: "Enhanced Machine Controller (EMC)"
> Subject: Re: [Emc-users] Second (PCI) parallel port card
>
> On Wed, Jan 26, 2011 at 5:23 PM, Ki
On Wed, Jan 26, 2011 at 5:23 PM, Kirk Wallace
wrote:
> On Wed, 2011-01-26 at 14:56 -0600, Igor Chudov wrote:
> ... snip
> > 1) Would you recommend some honestly made, reliable, and preferably low
> > profile PCI parallel card?
> >
> > 2) If I install a second card, how would my PC see it? With a d
On Wed, 2011-01-26 at 14:56 -0600, Igor Chudov wrote:
... snip
> 1) Would you recommend some honestly made, reliable, and preferably low
> profile PCI parallel card?
>
> 2) If I install a second card, how would my PC see it? With a different I/O
> address (not 378?). How do I find out that I/O num
On 26 January 2011 20:53, Andy I wrote:
> This is a bit off topic - what type of breakout boards are people using with
> their MESA FPGA cards? Are they home built or bought in
Both seem to be used, with bought-from-Mesa possibly the more common.
I have a bit of breadboard with headers and a f
Am Dienstag 25 Januar 2011, um 18:17:00 schrieb Kirk Wallace:
> If you are getting motion oscillation, I suspect it is due to the
> feedback system and not the motor. Halscoping the command and feedback
> signals should help determine the nature of the oscillation.
Some times it is handy to view a
The bad news is that the parallel port chipset that is on my new PC's
motherboard, does not want to talk to PPMC when two encoder boards are
installed in PPMC.
The good news is that this is the problem with the motherboard's parallel
port chipset, and the proof of it is that my old decrepit Dell P
I have a rotary table (4th axis) that has considerable friction.
I know this because the DC servo motor requires at least about 4 amps, to
turn the table.
The rotary table has a tight worm drive, not some sort of a ballscrew, and
the drive is hard to turn. I did try that without the motor, by han
Hi,
This is a bit off topic - what type of breakout boards are people using with
their MESA FPGA cards? Are they home built or bought in ? I have a 7i43 and
it looks like I may have to build myself a BoB but before I do, I thought I
ask to save a DoooH moment later.
Regards
Andy
--
Thanks Kirk,
...
> > Plus, I think that the logic should be implemented directly in the
> > electronics driving directly the motor, as the compensation strategy
> > should be fairly quick. Driving a variable intensity command from EMC
> > will certainly limit the strategy to low rpm.
>
> I tend
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