When you set pluto-servo.pwm.#.pwmdir TRUE, the output should be what you
call sign-magnitude:
value after scale+offsetPWM Dir
0.0 0%FALSE
0.5 50%FALSE
1.0100%* FALSE
On Fri, Jun 06, 2008 at 03:57:49PM -0700, Dave Engvall wrote:
OK, more dumb questions. Would a short ball screw do what you want?
It certainly would be more precise than acme rod; or do I miss the
intent?
I'm not sure I could get the ball of an indicator lever to ride in the
track on a
At 09:23 AM 6/7/2008, you wrote:
On Fri, Jun 06, 2008 at 03:57:49PM -0700, Dave Engvall wrote:
OK, more dumb questions. Would a short ball screw do what you want?
It certainly would be more precise than acme rod; or do I miss the
intent?
I'm not sure I could get the ball of an indicator
On Jun 7, 2008, at 7:23 AM, Chris Radek wrote:
On Fri, Jun 06, 2008 at 03:57:49PM -0700, Dave Engvall wrote:
OK, more dumb questions. Would a short ball screw do what you want?
It certainly would be more precise than acme rod; or do I miss the
intent?
I'm not sure I could get the ball of
Hi,
Does anyone happen to remember where the front panel codewheel to jog
code resides?
TIA
Dave
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Dave Engvall wrote:
Hi,
Does anyone happen to remember where the front panel codewheel to jog
code resides?
Uh - what? :)
Jogging (with a wheel) used to be done by halui or something, but it's
in the RT motion controller now. If you're asking about HAL files to
set it up, that should
Kirk Wallace wrote:
I haven't looked at the control signals with a scope. One inductor was
much hotter than the other. I assumed because it was because I was
driving the motor mostly one direction. I was planning on using 110
Volts for the motor supply.
Hmm, synchronous antiphase would
Kirk Wallace wrote:
Sometimes the the spindle context keeps me from seeing things as they
should be. More thinking aloud. An encoder still acts the same whether
it's on a linear axis or spindle. So if the spindle moves, the distance
is counted, and sometimes, it's a very long move. The delta
Jeff Epler wrote:
When you set pluto-servo.pwm.#.pwmdir TRUE, the output should be what you
call sign-magnitude:
value after scale+offsetPWM Dir
0.0 0%FALSE
0.5 50%FALSE
1.0
Andre' Blanchard wrote:
What is the delay (in degrees of rotation) between reading the spindle
encoder and positioning the Z axis?
That delay would be in opposite directions going and coming out.
Unless there is mechanical backlash between the spindle itself
and the spindle encoder, this
On Thursday 05 June 2008, Stephen Wille Padnos wrote:
We've discussed various methods of handling larger data types, which
this would require.
I don't recall ever seeing any discusssion about the usage of data types..
The good news is that once we have that, we can use
doubles anywhere.
On Jun 7, 2008, at 11:30 AM, Jon Elson wrote:
Andre' Blanchard wrote:
What is the delay (in degrees of rotation) between reading the
spindle
encoder and positioning the Z axis?
That delay would be in opposite directions going and coming out.
Unless there is mechanical backlash between
On Sat, 2008-06-07 at 13:06 -0500, Jon Elson wrote:
...snip
would put the PWM duty cycle at 50%, the worst case. What is
your DC supply voltage?
Jon
53 VDC unregulated with 500 uF of filter caps. So far the motor has had
no load. If you need more information let me know. If you want, I
On Sat, 2008-06-07 at 13:18 -0500, Jon Elson wrote:
... snip
thread. The only discontinuity is that you WANT to break the
continuity of the linear axis to the spindle, or you'd have to
rewind the spindle for each threading pass.
Jon
Shoot, that is simpler than I thought, and makes sense
Jon,
What *should* the driving signals look like at the input of your
amplifiers? I assume from your response that I'm making some kind of
rookie mistake here, compounded by the fact that I still don't
understand what the mistake is.
Jeff
On Sat, 2008-06-07 at 13:24 -0500, Jon Elson wrote:
Jeff Epler wrote:
When you set pluto-servo.pwm.#.pwmdir TRUE, the output should be what you
call sign-magnitude:
value after scale+offsetPWM Dir
0.0 0%FALSE
0.5
don't feel bad :)
http://www.electronicsam.com/images/KandT/servostart/ampmess.JPG
sam
- Original Message -
From: Kirk Wallace [EMAIL PROTECTED]
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Sent: Saturday, June 07, 2008 5:13 PM
Subject: Re: [Emc-users] Pico on
On Sat, Jun 07, 2008 at 10:06:25AM -0500, Andre' Blanchard wrote:
What is the delay (in degrees of rotation) between reading the spindle
encoder and positioning the Z axis?
That delay would be in opposite directions going and coming out.
That was exactly my thinking too. But as others have
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