Re: [Emc-users] MPG that is compatible with EMC2?

[Jason Burton]

The 3d space navigator maintains focus via their proprietary drivers.

>From examining mine I can say it does enumerate as an HID compliant device,
but not as a standard.

I couldn't say how though, either.

Jason
On Oct 8, 2012 9:36 PM, "Jon Elson"  wrote:

> Igor Chudov wrote:
> > John, I thought that USB based pendant would be the nicest, esp. if it
> can
> > act as a keyboard or some such.
> >
> No, if it emulates an HMI device, then it loses focus when some other
> window
> is selected.  That would be the worst situation.  Maybe there is some
> way you
> can capture an HMI device for use by a specific program, but I don't know
> how to do that.
>
> Jon
>
>
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Re: [Emc-users] MPG that is compatible with EMC2?

[Jon Elson]

Igor Chudov wrote:
> John, I thought that USB based pendant would be the nicest, esp. if it can
> act as a keyboard or some such.
>   
No, if it emulates an HMI device, then it loses focus when some other window
is selected.  That would be the worst situation.  Maybe there is some 
way you
can capture an HMI device for use by a specific program, but I don't know
how to do that.

Jon

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Re: [Emc-users] MPG that is compatible with EMC2?

[Igor Chudov]

John, I thought that USB based pendant would be the nicest, esp. if it can
act as a keyboard or some such.

On Mon, Oct 8, 2012 at 12:46 PM, Jon Elson  wrote:

> Igor Chudov wrote:
> > John, my parallel port is occupied by the PPMC motion system, that's why
> I
> > would prefer a USB interface. I do not care for any sort of real time
> with
> > a MPG.
> >
> On the other hand, the PPMC has enough digital input pins to do a nice
> pendant,
> especially if you are not using all the separate limit switch inputs.  See
> http://pico-systems.com/pendant.html
>
> (I thought I had a schematic of the pendant wiring for the PPMC, but it
> is very similar
> to the way the minimill pendant is set up.  I'll try to get that drawing
> on there
> shortly.)
>
> These use diodes to encode the switch settings, so you can hook up 7
> axis selections (XYZAB plus feedrate and spindle override) and 3 jog
> rate selections with only 5 digital inputs.
>
> Jon
>
>
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Re: [Emc-users] MPG that is compatible with EMC2?

[Jon Elson]

Igor Chudov wrote:
> John, my parallel port is occupied by the PPMC motion system, that's why I
> would prefer a USB interface. I do not care for any sort of real time with
> a MPG.
>   
On the other hand, the PPMC has enough digital input pins to do a nice 
pendant,
especially if you are not using all the separate limit switch inputs.  See
http://pico-systems.com/pendant.html

(I thought I had a schematic of the pendant wiring for the PPMC, but it 
is very similar
to the way the minimill pendant is set up.  I'll try to get that drawing 
on there
shortly.)

These use diodes to encode the switch settings, so you can hook up 7
axis selections (XYZAB plus feedrate and spindle override) and 3 jog
rate selections with only 5 digital inputs.

Jon

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Re: [Emc-users] MPG that is compatible with EMC2?

[Jon Elson]

Mark Wendt wrote:
>>
>> presumably the USB driver for this does not run in real-time? (I'd be
>> careful in trusting the e-stop through USB too much...)
>> 
The E-stop switch should be separate, and wired into the e-stop chain.

Jon

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Re: [Emc-users] MPG that is compatible with EMC2?

[Igor Chudov]

John, my parallel port is occupied by the PPMC motion system, that's why I
would prefer a USB interface. I do not care for any sort of real time with
a MPG.

i

On Mon, Oct 8, 2012 at 9:50 AM, John Stewart  wrote:

> Whoops -
>
> I have one with a "parallel port" on it - I missed the USB bit - I should
> know better than to do emailing before coffee…
>
> I got mine from cnc4pc.com - have a peek there to see what I was thinking
> about wrt the parallel port "stuff".
>
> (the C22 pendant interface, and the MPG-2 pendant is what I picked up from
> CNC4PC. It all went together very well, and plugs into a parallel port.
>
> the E-Stop function is tied into hardware, no software required for the
> EStop to work with the "parallel" port pendant - I wonder if the USB
> version uses "unused" pins on the usb interface for hardware E-Stop ??)
>
>
> John A. Stewart.
>
> On 2012-10-08, at 9:51 AM, Anders Wallin wrote:
>
> >>
> >> 
> >>
> >> Take your pick.  I use the MPG3, but it now seems they're carrying a 4
> >> axis and a 6 axis USB based MPG.
> >
> > presumably the USB driver for this does not run in real-time? (I'd be
> > careful in trusting the e-stop through USB too much...)
> > Do you notice any lag if you jog back and forth quickly?
> > Could one write a latency-test for the USB-driver, i.e. measure the
> > worst-case performance?
>
>
>
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Re: [Emc-users] MPG that is compatible with EMC2?

[Mark Wendt]

On Mon, Oct 8, 2012 at 9:51 AM, Anders Wallin
 wrote:
>>
>> 
>>
>> Take your pick.  I use the MPG3, but it now seems they're carrying a 4
>> axis and a 6 axis USB based MPG.
>
> presumably the USB driver for this does not run in real-time? (I'd be
> careful in trusting the e-stop through USB too much...)
> Do you notice any lag if you jog back and forth quickly?
> Could one write a latency-test for the USB-driver, i.e. measure the
> worst-case performance?
>
> AW

No, no real-time.  It's just an input device like a keyboard or mouse,
so it's not necessary for it to run in real time.  The MPG runs on
it's own parallel port, and my USB joystick runs on one of the USB
ports.

No lag that I can determine.

Mark

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Re: [Emc-users] MPG that is compatible with EMC2?

[Mark Wendt]

On Mon, Oct 8, 2012 at 9:11 AM, John Stewart  wrote:
> Yeah, I have one of the XYZA ones - works incredibly well. I did get the 
> "breakout board" to ensure that I got the 5v, and the EStop functionality for 
> it.
>
> (I started with a USB joystick, but I'm programmed to turn knobs to make 
> things move; joysticks do not do that for me)
>
> John A. Stewart.

John,

I've got both a USB joystick and the MPG attached to my machine.  They
both come in handy at different times.

Mark

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Re: [Emc-users] MPG that is compatible with EMC2?

[John Stewart]

Whoops - 

I have one with a "parallel port" on it - I missed the USB bit - I should know 
better than to do emailing before coffee…

I got mine from cnc4pc.com - have a peek there to see what I was thinking about 
wrt the parallel port "stuff".

(the C22 pendant interface, and the MPG-2 pendant is what I picked up from 
CNC4PC. It all went together very well, and plugs into a parallel port. 

the E-Stop function is tied into hardware, no software required for the EStop 
to work with the "parallel" port pendant - I wonder if the USB version uses 
"unused" pins on the usb interface for hardware E-Stop ??)


John A. Stewart.

On 2012-10-08, at 9:51 AM, Anders Wallin wrote:

>> 
>> 
>> 
>> Take your pick.  I use the MPG3, but it now seems they're carrying a 4
>> axis and a 6 axis USB based MPG.
> 
> presumably the USB driver for this does not run in real-time? (I'd be
> careful in trusting the e-stop through USB too much...)
> Do you notice any lag if you jog back and forth quickly?
> Could one write a latency-test for the USB-driver, i.e. measure the
> worst-case performance?


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Re: [Emc-users] MPG that is compatible with EMC2?

[Anders Wallin]

>
> 
>
> Take your pick.  I use the MPG3, but it now seems they're carrying a 4
> axis and a 6 axis USB based MPG.

presumably the USB driver for this does not run in real-time? (I'd be
careful in trusting the e-stop through USB too much...)
Do you notice any lag if you jog back and forth quickly?
Could one write a latency-test for the USB-driver, i.e. measure the
worst-case performance?

AW

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Re: [Emc-users] MPG that is compatible with EMC2?

[John Stewart]

Yeah, I have one of the XYZA ones - works incredibly well. I did get the 
"breakout board" to ensure that I got the 5v, and the EStop functionality for 
it.

(I started with a USB joystick, but I'm programmed to turn knobs to make things 
move; joysticks do not do that for me)

John A. Stewart.



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Re: [Emc-users] MPG that is compatible with EMC2?

[Mark Wendt]

On Sun, Oct 7, 2012 at 8:52 PM, Igor Chudov  wrote:
> I am messing around with a very interesting Lagunmatic 5HP CNC milling
> machine that has a bad VFD drive.
>
> The drive is being professionally repaired.
>
> What I noticed is that this machine has an awesome MPG. You switch X, y and
> Z and turn it and the machine advances very precisely.
>
> I wanted to know if there is a commercial off-the-shelf product that could
> work with EMC2?
>
> Preferably USB based?
>
> Any pointers?
>
> Thanks



Take your pick.  I use the MPG3, but it now seems they're carrying a 4
axis and a 6 axis USB based MPG.

Mark

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Re: [Emc-users] MPG that is compatible with EMC2?

[jeremy youngs]

i wonder about e bay? ive seen them there I have often wondered though
if they are professional grade

jeremy youngs

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[Emc-users] MPG that is compatible with EMC2?

[Igor Chudov]

I am messing around with a very interesting Lagunmatic 5HP CNC milling
machine that has a bad VFD drive.

The drive is being professionally repaired.

What I noticed is that this machine has an awesome MPG. You switch X, y and
Z and turn it and the machine advances very precisely.

I wanted to know if there is a commercial off-the-shelf product that could
work with EMC2?

Preferably USB based?

Any pointers?

Thanks
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