On Thu, 11 Aug 2011, Cliff Blackburn wrote:
Date: Thu, 11 Aug 2011 06:04:45 -0700
From: Cliff Blackburn cblackb...@powertechrepairs.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: [Emc-developers] Hostmot 2
On Thu, 11 Aug 2011, Cliff Blackburn wrote:
Date: Thu, 11 Aug 2011 01:40:30 -0700
From: Cliff Blackburn cblackb...@powertechrepairs.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] Hostmot
2 7I65 Encoder Mux Patch
On 8/11/2011 7:06 AM, Peter C. Wallace wrote:
On Thu, 11 Aug 2011, Cliff Blackburn wrote:
Date: Thu, 11 Aug 2011 01:40:30 -0700
From: Cliff Blackburncblackb...@powertechrepairs.com
Reply-To: EMC developersemc-developers@lists.sourceforge.net
To: EMC developersemc
if Preempt-RT may be more flexible.
Steve Stallings (unrepentant top poster)
-Original Message-
From: Peter C. Wallace [mailto:p...@mesanet.com]
Sent: Thursday, July 21, 2011 9:34 AM
To: EMC developers
Subject: Re: [Emc-developers] Preempt-RT ... where to put the patches ?
On Wed
On Thu, 21 Jul 2011, Jon Elson wrote:
Date: Thu, 21 Jul 2011 12:01:29 -0500
From: Jon Elson el...@pico-systems.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] Preempt-RT ... where to put
On Thu, 21 Jul 2011, Brian wrote:
Date: Thu, 21 Jul 2011 13:30:00 -0400
From: Brian turbo94must...@gmail.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] Preempt-RT ... where to put the
On Sat, 18 Jun 2011, Jon Elson wrote:
Date: Sat, 18 Jun 2011 13:52:05 -0500
From: Jon Elson el...@pico-systems.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] CUI encoders
Kim Kirwan wrote:
On Mon, 23 May 2011, Javier Ros wrote:
Date: Mon, 23 May 2011 16:37:48 +0200
From: Javier Ros j...@unavarra.es
To: EMC developers emc-developers@lists.sourceforge.net
Subject: [Emc-developers] Timestamp based velocity estimation. WAS: Re: Fanuc
converter
Hello,
In the referred thread,
On Sat, 14 May 2011, Kirk Wallace wrote:
Jon
They must use direct drive, fast screws and very stiff mechanical
structures in order to justify the high encoder resolution. On my
machines, the least significant bits would be noise.
--
Kirk Wallace
On Sat, 14 May 2011, dave wrote:
Date: Sat, 14 May 2011 08:47:29 -0700
From: dave dengv...@charter.net
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] Fanuc converter
On Sat, 2011-05-14 at
On Sat, 30 Apr 2011, Brian wrote:
Date: Sat, 30 Apr 2011 10:59:26 -0400
From: Brian turbo94must...@gmail.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] Fanuc converter
If the problem
On Fri, 29 Apr 2011, Jon Elson wrote:
Date: Fri, 29 Apr 2011 11:24:50 -0500
From: Jon Elson el...@pico-systems.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] Fanuc converter
Peter C
On Thu, 28 Apr 2011, andy pugh wrote:
Date: Thu, 28 Apr 2011 21:26:49 +0100
From: andy pugh bodge...@gmail.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] [PATCH] Add support for Hostmot2
Buffered SPI
and the Mesa 7i65
On 28 April 2011 23:24, Peter C. Wallace p...@mesanet.com wrote:
Yes, you must send to receive with SPI so unless you want to duplicate the
sending (Looking at the 7I43 timing I would think not) you need to reverse
the
normal order of read write (for SPI
for the moment. The jury is still out, and we're upgrading
the PC, at least somewhat.
Thanks very much, I look forward to hearing more on this.
Kim
On 04/28/2011 05:52 PM, Peter C. Wallace wrote:
On Thu, 28 Apr 2011, andy pugh wrote:
Date: Thu, 28 Apr 2011 23:29:26 +0100
From: andy pugh
Looks like theres a minor startup bug in the bldc comp when using Q
(thump start) mode. I'm not absolutely sure whats going on but it looks like
what happens is the current is ramped as the 90 electrical degree rotate is
done (which does seem to align the rotor reliably), but then when
at 11:26 PM, Peter C. Wallace p...@mesanet.com wrote:
--- if ( ( tmp1 * pid-limit_state ) = 0.0 ) {
+++ if ( ( tmp1 * pid-limit_state * pid-igain ) = 0.0 ) {
+++ if ( ( tmp1 * pid-limit_state (pid-igain ) = 0.0 ) {
Is a possible patch if negative PID values are to be allowed
Based
--- if ( ( tmp1 * pid-limit_state ) = 0.0 ) {
+++ if ( ( tmp1 * pid-limit_state * pid-igain ) = 0.0 ) {
Is a possible patch if negative PID values are to be allowed
Peter Wallace
Mesa Electronics
--
The ultimate
a
reasonable value.
2011/2/4 Peter C. Wallace p...@mesanet.com
I have an idea for a better patch to the pid comp than simply removing the
if
limit_state conditional around the integrator. I understand the benefit of
freezing the integrator when the output is saturated. This is useful for
good PID
On Fri, 4 Feb 2011, Dave wrote:
Date: Fri, 04 Feb 2011 11:48:17 -0500
From: Dave e...@dc9.tzo.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] pid bug
I usually see anti-windup schemes
2011 21:08:09 -0800 (PST)
Peter C. Wallace p...@mesanet.com wrote:
It was pretty surprising. I was using Matt Shavers velocity mode test
hal file with halrun, so the effect was not masked by a FE as it
would be under EMC. If we had any integral gain and put enough load
on the motor
(PST)
Peter C. Wallace p...@mesanet.com wrote:
OK the first thing thats needed is to connect pid.n.enable to
bldc.0.init-done so the integrator does not wind up during motor
initialization.
I would, but when the the bldc component is loaded with a cfg
parameter that includes h (you have Hall
It looks like the integral term has some funny problems in the pid comp.
The symptom is that when the integral term causes the output to saturate, and
there is no integral limit or the integral limit is MaxOutput/Igain it
never recovers, and ends up driving in one direction regardless of the
On Wed, 2 Feb 2011, Jon Elson wrote:
Date: Wed, 02 Feb 2011 22:27:17 -0600
From: Jon Elson el...@pico-systems.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] pid bug
Peter C. Wallace
On Mon, 10 Jan 2011, andy pugh wrote:
Date: Mon, 10 Jan 2011 01:49:53 +
From: andy pugh bodge...@gmail.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: [Emc-developers] Hostmot2 Smart Serial (8i20 and 7i64)
On Mon, 10 Jan 2011, andy pugh wrote:
Date: Mon, 10 Jan 2011 01:49:53 +
From: andy pugh bodge...@gmail.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: [Emc-developers] Hostmot2 Smart Serial (8i20 and 7i64)
C. Wallace p...@mesanet.com wrote:
OK bitfile and assosciated pin file:
www.mesanet.com/software/parallel/sssvst.zip
Had to drop two encoder counters to fit
2 sserial channels:
chan 0: tx1,rx5
chan 1: tx3,rx11
cable (standard cat5 cut in half):
ch 0 ch 1
txb1 txb3 orange/white
OK bitfile and assosciated pin file:
www.mesanet.com/software/parallel/sssvst.zip
Had to drop two encoder counters to fit
2 sserial channels:
chan 0: tx1,rx5
chan 1: tx3,rx11
cable (standard cat5 cut in half):
ch 0 ch 1
txb1 txb3 orange/white
txa1 txa3 orange
rxb5 rxb11
On Fri, 12 Nov 2010, Andy Pugh wrote:
Date: Fri, 12 Nov 2010 17:34:50 +
From: Andy Pugh a...@andypugh.fsnet.co.uk
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] BLDC Driver
On 12
On Wed, 10 Nov 2010, Brian wrote:
Date: Wed, 10 Nov 2010 00:00:29 -0500
From: Brian turbo94must...@gmail.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] BLDC Driver
BLDC and AC servos
On Mon, 1 Nov 2010, Jon Elson wrote:
Date: Mon, 01 Nov 2010 00:13:36 -0500
From: Jon Elson el...@pico-systems.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] pid with derivative inputs
Peter C. Wallace wrote:
One good sanity check on the velocity output is to setup your hardware step
generator for quadrature mode and set a constant velocity but randomly
changing directions(and ~infinite acceleration). Another good test is just a
slow velocity ramp. The advantage
On Fri, 17 Sep 2010, Slavko Kocjancic wrote:
Date: Fri, 17 Sep 2010 11:55:51 +0200
From: Slavko Kocjancic esla...@gmail.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] StepGen
Hmm...
On Fri, 17 Sep 2010, Andy Pugh wrote:
Date: Fri, 17 Sep 2010 10:35:52 +0100
From: Andy Pugh a...@andypugh.fsnet.co.uk
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] StepGen
On 17 September
On Tue, 20 Apr 2010, Alexey Starikovskiy wrote:
Date: Tue, 20 Apr 2010 13:46:41 +0400
From: Alexey Starikovskiy aysta...@gmail.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] Coordinated Gantry Homing by
On Tue, 20 Apr 2010, Peter C. Wallace wrote:
Date: Tue, 20 Apr 2010 08:14:03 -0700 (PDT)
From: Peter C. Wallace p...@mesanet.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] Coordinated
Gantry Homing by Linked Joints
20.04.2010 19:30, Peter C. Wallace ??:
(Syncing on index of course assuming you could not easily rack the gantry
1/2 a leadscrew turn)
There is a much bigger assumption -- you are running servos, they have
index,
index is routed in, and index offset between
On Thu, 1 Apr 2010, Slavko Kocjancic wrote:
Date: Thu, 01 Apr 2010 10:25:24 +0200
From: Slavko Kocjancic esla...@gmail.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: [Emc-developers] EPP timeout
Hello...
On Thu, 1 Apr 2010, Peter C. Wallace wrote:
Date: Thu, 1 Apr 2010 08:34:34 -0700 (PDT)
From: Peter C. Wallace p...@mesanet.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] EPP timeout
On Sat, 6 Feb 2010, Jeff Epler wrote:
Date: Sat, 6 Feb 2010 18:18:51 -0600
From: Jeff Epler jep...@unpythonic.net
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] hostmot2 stepping folowing
No, unlike the 7I43, the 3X20 doesnt care about config options so this is
fairly mysterious. If you point me to the bad bitfile I'll give it a try here
and do some probing about.
Well, turns out thats not quite true, the 3X20 doesnt care about DONE but it
DOES care about the order of
builds of the hostmot2
firmware images
On Tue, Jan 19, 2010 at 05:29:49PM -0800, Peter C. Wallace wrote:
Being unable to reconfig the FPGA usually means that the FPGA is driving some
line that messes up the bridge (for example hold-holda or /ready are a couple
of fatal pins if driven wrong
On Tue, 19 Jan 2010, Sebastian Kuzminsky wrote:
Date: Tue, 19 Jan 2010 00:04:57 -0700
From: Sebastian Kuzminsky s...@highlab.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] Request for
On Mon, 19 Oct 2009, Sebastian Kuzminsky wrote:
Date: Mon, 19 Oct 2009 10:04:18 -0600
From: Sebastian Kuzminsky s...@highlab.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers]
On Sun, 18 Oct 2009, Peter C. Wallace wrote:
Date: Sun, 18 Oct 2009 20:11:36 -0700 (PDT)
From: Peter C. Wallace p...@mesanet.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] hostmot2
On Sun, 18 Oct 2009, Sebastian Kuzminsky wrote:
Date: Sun, 18 Oct 2009 20:47:32 -0600
From: Sebastian Kuzminsky s...@highlab.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC developers emc-developers@lists.sourceforge.net
Subject: Re: [Emc-developers] hostmot2
stepping folowing error oddity
Peter C. Wallace wrote:
On Mon, 12 Oct 2009, Chris Morley wrote:
I'm having a little problem with a hostmot2 stepper setup.
I get following errors that I can't track down a reason for.
Is it possible you simple dont have enough hardware headroom to reach you max
On Mon, 12 Oct 2009, Chris Morley wrote:
Date: Mon, 12 Oct 2009 01:53:06 +
From: Chris Morley chrisinnana...@hotmail.com
Reply-To: EMC developers emc-developers@lists.sourceforge.net
To: EMC DEV emc-developers@lists.sourceforge.net
Subject: [Emc-developers] hostmot2 stepping folowing
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