Re: [Emc-users] Pluto-p board question

2013-07-12 Thread W. Martinjak
h, are there no unused pluto-p boards on the shelves?
I'm wondering.



On 2013-07-11 12:00, W. Martinjak wrote:
 Greetings!

 Are there some fellows who have plut-p boards
 and would sell it for a good price?
 I'm in search of some.
 My location is in europe.


 Thanks and regards,

 Matsche


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Re: [Emc-users] Pluto-p board question

2013-07-12 Thread Kirk Wallace
On 07/12/2013 05:03 AM, W. Martinjak wrote:
 h, are there no unused pluto-p boards on the shelves?
 I'm wondering.
... snip

Mine is on a shelf somewhere. I just don't recall where the shelf is. If 
you _really_ need a Pluto-P. I can make an effort to look.

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Re: [Emc-users] Pluto-p board question

2013-07-11 Thread Sebastian Kuzminsky
As far as i know, the Pluto boards are no longer being made, and never worked 
that well to start with.

Look at the Mesa 7i43 for a modern replacent.



W. Martinjak mats...@play-pla.net wrote:

Greetings!

Are there some fellows who have plut-p boards
and would sell it for a good price?
I'm in search of some.
My location is in europe.


Thanks and regards,

Matsche

-- 
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nur ihre Gegner sterben nach und nach

Max Planck


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Re: [Emc-users] Pluto-p board question

2013-07-11 Thread W. Martinjak

On 2013-07-11 15:21, Sebastian Kuzminsky wrote:
 As far as i know, the Pluto boards are no longer being made, and never worked 
 that well to start with.

 Look at the Mesa 7i43 for a modern replacent.




Yes, and due to this circumstance there should a couple of them lying about and 
let's hope cheap.
Please don't keep me from it.
I'm notorious nostalgic

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Re: [Emc-users] Pluto-P board question ?

2009-03-24 Thread Jeff Epler
If you haven't already bought the pluto-p hardware, I recommend you
consider the various interface cards from http://mesanet.com/ or
http://pico-systems.com/motion.html instead -- they are better
constructed and have a better record of hardware compatability.

With that said, the documentation 
http://www.linuxcnc.org/docview/html//hal_drivers.html#sec:pluto-servo
talks about the limits of the quadrature interface of pluto-p:
The maximum useful quadrature rate is 8191 counts per emc2 servo
cycle, or about 8MHz for EMC2's default 1ms servo rate.
your requirement of 50 pulses/second (500kHz) is well within the
range the pluto-p can read and report to emc (8MHz).

Jeff

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Re: [Emc-users] Pluto-P board question ?

2009-03-24 Thread Jon Elson
Marko Bukovinsky wrote:
 What is the maximum counts / second Pluto - P can accept?

 I need 2 counts/ rev so , can i use encoder with 5000 pulses ?

 Machine will have max 15m/min rapid move. motor 1500 rpm and 2
 counts ( x 4 ) will pruduce 50 pulses/ second. Is this acceptable
   
Since Jeff Eppler recommended my boards, I want to point out that the 
300,000 count/second limit on my boards is a VERY conservative spec.  
The encoder counter is clocked at 1 MHz, so that if there is not a lot 
of jitter and noise, it can count easily at 500,000 counts/second.
Where it becomes a problem is if the encoder signal contains a lot of 
noise and timing jitter.  I can up the clock rate to the encoder counter 
to raise this limit if needed.  Firmware is an 8-pin DIP plug-in, so 
field updates are quite possible.

I don't want to disparage anyone else's products, but we have gone to 
great lengths to make our boards work with the variety of parallel port 
chips used on various motherboards.

Jon

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