Re: [Emc-users] 7i43 encoder count failures

On Tue, 2 Feb 2016, Marius Alksnys wrote: > Date: Tue, 2 Feb 2016 20:40:21 +0200 > From: Marius Alksnys > Reply-To: "Enhanced Machine Controller (EMC)" > > To: emc-users@lists.sourceforge.net > Subject: [Emc-users] 7i43 encoder

[Emc-users] MPG Handwheel for use with 7i73

This is mainly directed at PCW, but after looking at this,

[Emc-users] 7i43 encoder count failures

Today I catched the fault which was causing headache for quite a long time already. There is a machine with one 7i43 P (200k) and one 7i39 and one BLDC motor with encoder. I got reports about unexpected moves of the machine while standing still. Today I saw: count 712171 rawcounts 780979

Re: [Emc-users] 7i43 encoder count failures

Is't there some checksum used? -- Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take

Re: [Emc-users] 7i43 encoder count failures

On Tue, 2 Feb 2016, Marius Alksnys wrote: Date: Tue, 2 Feb 2016 21:07:27 +0200 From: Marius Alksnys Reply-To: "Enhanced Machine Controller (EMC)" To: emc-users@lists.sourceforge.net Subject: Re: [Emc-users] 7i43 encoder count

Re: [Emc-users] Prempt RT on Linux Mint

answer/comment in line On Tue, Feb 2, 2016 at 2:08 PM, Rafael wrote: > On 02/02/2016 04:56 AM, Sarah Armstrong wrote: > > i dont see why not , but the patch will be different probably , i'd need > to > > try it > > why use ubuntu ? , thats another can of worms to get in the

Re: [Emc-users] Prempt RT --> RTAI, Xenomai, delay

> ... > That's because NOBODY (manufacturers or distributors) wants to futz with > testing motherboard latencies, problems with their obsolescence, IO > boards, controllers, USB issues, etc. All that is a big concern to > anybody who wants to see LinuxCNC as part of their business. Preempt RT

Re: [Emc-users] Prempt RT --> RTAI, Xenomai, delay

Nicklas, There is a fork of LinuxCNC called Machinekit. The Machinekit developers have the system running on BeagleBoneBlack sbc's and RaspberryPi2's. They also have the real-time portions running on FPGA's. One effort involves using System-On-Chip FPGAs, which include ARM processor cores. The

Re: [Emc-users] Prempt RT on Linux Mint

On Tue, 2 Feb 2016, Rafael wrote: > Date: Tue, 2 Feb 2016 12:08:59 -0800 > From: Rafael > Reply-To: "Enhanced Machine Controller (EMC)" > > To: "Enhanced Machine Controller (EMC)" > Subject: Re: [Emc-users]

Re: [Emc-users] Prempt RT on Linux Mint

> ... There seems to be an obsession with getting super-low latency > and a concomitant belief that unless you can get into single-digit > microseconds you might as well give up. It is small delays happening every now and then that cause problem, there migth be in average one warning per minute

Re: [Emc-users] Prempt RT --> RTAI, Xenomai, delay

> > Preempt RT do not manage priorities properly for interrupts while RTAI and > > Xenomai do. It is rather simple, execution time to service an interupt > > every > > now and then will delay real time tasks with as much time as they take to > > execute. Then there are SMI which will interrupt

Re: [Emc-users] Prempt RT on Linux Mint

On 2 February 2016 at 22:45, Peter C. Wallace wrote: > This might be true with parallel port software stepping systems that require a > high speed base thread for pulse generation and perhaps encoder counting, > but is not the case at all for servo thread only systems, I don't

Re: [Emc-users] Prempt RT --> RTAI, Xenomai, delay

On Tue, 2 Feb 2016, Nicklas Karlsson wrote: > Date: Tue, 2 Feb 2016 22:27:59 +0100 > From: Nicklas Karlsson > Reply-To: "Enhanced Machine Controller (EMC)" > > To: "Enhanced Machine Controller (EMC)"

Re: [Emc-users] Odd SSR behaviour?

On Monday 01 February 2016 19:09:51 Gene Heskett wrote: > On Monday 01 February 2016 17:49:01 John Kasunich wrote: > > On Mon, Feb 1, 2016, at 05:31 PM, Gene Heskett wrote: > > > Greetings; > > > > > > Those of you reading the mail know I made a soft start circuit for > > > the spindle PSU. > > >

Re: [Emc-users] Prempt RT on Linux Mint

On 2016-02-02 23:59, andy pugh wrote: > On 2 February 2016 at 22:45, Peter C. Wallace wrote: >> This might be true with parallel port software stepping systems that require >> a >> high speed base thread for pulse generation and perhaps encoder counting, >> but is not the case

Re: [Emc-users] 7i43 encoder count failures

How would you explain that when parallel port transfers data 8 bytes at a time and I get errors only in one bit through 3 bytes at least? 02/02/2016 08:49 PM, Peter C. Wallace rašė: > Sounds like errors in the EPP connection. I would try shortening the > EPP cable to the minimum length (If you

Re: [Emc-users] 7i43 encoder count failures

On Tue, 2 Feb 2016, Marius Alksnys wrote: > Date: Tue, 2 Feb 2016 21:08:26 +0200 > From: Marius Alksnys > Reply-To: "Enhanced Machine Controller (EMC)" > > To: emc-users@lists.sourceforge.net > Subject: Re: [Emc-users] 7i43 encoder

Re: [Emc-users] Prempt RT on Linux Mint

On 02/02/2016 04:56 AM, Sarah Armstrong wrote: > i dont see why not , but the patch will be different probably , i'd need to > try it > why use ubuntu ? , thats another can of worms to get in the way . > > debian now has the 2 desktops that minit as > Why use this, why not use that? This is

Re: [Emc-users] Odd SSR behaviour?

On 02/02/2016 10:03 PM, Gene Heskett wrote: > > I believe they are. Would you like to see the .hal file? Hmm, not sure I could tell much from it. Is this using a Pico Systems PWM controller, or a Mesa board? (I've lost track.) Following info assumes my PWM controller. When you hit F2 to go

Re: [Emc-users] Prempt RT on Linux Mint

> For example, Digital minicomputers were much slower compared to PC > motherboards, yet they were able to handle industrial applications just > fine. Application ran in RT OS to handle DIO or analog signals. > > Old PDP HW is getting replaced with special PC cards that are able to > run

Re: [Emc-users] Well, thats the end of aliexpress.com for me (OT warning)

nicklas hahaha i understand very well but dont be sour all women love you.r money as they say here in thailand ;-) tomp On 02/02/2016 01:16 AM, Nicklas Karlsson wrote: > On Mon, 1 Feb 2016 08:27:42 -0800 > Steve Traugott wrote: > >> Interesting. My wife and

Re: [Emc-users] Prempt RT on Linux Mint

I can say a word about my journey through Linux distributions and DEs. The main reason why I came to Linux was LinuxCNC. I started from Ubuntu 10 x86 as such image was offered by LinuxCNC. And I made myself comfortable with it including for casual tasks. Later on I moved to Debian Wheezy x86

Re: [Emc-users] Camview-emc workalike? Update, solved.

On Monday 01 February 2016 14:40:56 Gene Heskett wrote: To bring this up to date, the linkage between the xml created pyvcp buttons and lcnc has been solved. In the big docs pdf, I read that to access buttons created by pyvcp, one must add 'pyvcp.' to the names, so I took the halpin created

Re: [Emc-users] Mesa Reseller in America

On 2 February 2016 at 06:25, Peter Blodow wrote: > Congratulations, John! Wish someone would have the guts to do that here > in old Germany, too! Only one border away: http://www.duzi.cz/shop_cnc/index.php?main_page=index=1 -- atp If you can't fix it, you don't own it.

Re: [Emc-users] Problem with linuxcnc not starting

It's really quite simple your new game controller has a different name... JT On 2/1/2016 5:39 PM, chris wrote: > No input device matching 'Jess' was found (1 devices checked) -- Site24x7 APM Insight: Get Deep

Re: [Emc-users] Mesa Reseller in America

Thanks JT On 2/2/2016 7:04 AM, Mark wrote: > On 02/01/2016 05:14 PM, John Thornton wrote: >> I just want to announce that I'm going to be a Mesa Electronics reseller >> in America. I just got conformation on my first stocking order should be >> here Friday February 5th. As soon as I get

Re: [Emc-users] Mesa Reseller in America

unfortunately iv'e lost all confidence in mesa On 2 February 2016 at 13:04, Mark wrote: > On 02/01/2016 05:14 PM, John Thornton wrote: > > I just want to announce that I'm going to be a Mesa Electronics reseller > > in America. I just got conformation on my first stocking

Re: [Emc-users] Prempt RT on Linux Mint

Well Linux Mint with Mate is a much better behaved desktop. Having said that and I think I tried Debian with Mate with poor results. I'll have to dig through my pile of disks to see... maybe not, the only one I tried is the net install which only offers gnome, kde, lxde and xfce. JT On

Re: [Emc-users] Mesa Reseller in America

Because of the delivery problems? JT On 2/2/2016 7:18 AM, Sarah Armstrong wrote: > unfortunately iv'e lost all confidence > in mesa > > On 2 February 2016 at 13:04, Mark wrote: > >> On 02/01/2016 05:14 PM, John Thornton wrote: >>> I just want to announce that I'm going to

Re: [Emc-users] Prempt RT on Linux Mint

> > There are two or 3 that mention LinuxCNC as a possibility > > but they do not support it. Why? That's because NOBODY > > (manufacturers or distributors) wants to futz with testing > > motherboard latencies, > Mach3 also required a motherboard with certain > characteristics, or the results

Re: [Emc-users] Odd SSR behaviour?

On Tuesday 02 February 2016 21:55:10 Jon Elson wrote: > Gene, > > One detail. Is the breaker only tripping when you turn OFF > the SSR? No Jon, I stretched the off delays, and the breaker is falling as soon as I click the off button. Thats 3 to 5 seconds BEFORE either SSR is turned off. And

Re: [Emc-users] Odd SSR behaviour?

On 02/02/2016 09:05 PM, Gene Heskett wrote: > > I don't hear it, but since they are toroids on ferrite cores, would I > hear that? They are very quiet otherwise. Your power transformers are Ferrite? Are you sure? If these are Hammond toroids, they are wound up with a steel strip. I can't

Re: [Emc-users] Odd SSR behaviour?

On Tue, Feb 2, 2016, at 10:22 PM, Gene Heskett wrote: > On Tuesday 02 February 2016 21:55:10 Jon Elson wrote: > > > Gene, > > > > One detail. Is the breaker only tripping when you turn OFF > > the SSR? > > No Jon, I stretched the off delays, and the breaker is falling as soon as > I click

Re: [Emc-users] Prempt RT on Linux Mint

On 02/02/2016 06:34 PM, Jon Elson wrote: > On 02/02/2016 02:08 PM, Rafael wrote: >> Why use this, why not use that? This is precisely why >> LinuCNC has no traction in commercial products. Unless >> things have changed in the last 2 months, you cannot find >> a single CNC machine or good kit on

Re: [Emc-users] Prempt RT on Linux Mint

On 02/02/2016 02:59 PM, andy pugh wrote: > On 2 February 2016 at 22:45, Peter C. Wallace wrote: >> This might be true with parallel port software stepping systems that require >> a >> high speed base thread for pulse generation and perhaps encoder counting, >> but is not the

Re: [Emc-users] Odd SSR behaviour?

On Tuesday 02 February 2016 22:31:51 Jon Elson wrote: > On 02/02/2016 09:05 PM, Gene Heskett wrote: > > I don't hear it, but since they are toroids on ferrite cores, would > > I hear that? They are very quiet otherwise. > > Your power transformers are Ferrite? Are you sure? If > these are

Re: [Emc-users] 7i43 encoder count failures

On 02/02/2016 01:07 PM, Marius Alksnys wrote: > How would you explain that when parallel port transfers data 8 bytes at > a time and I get errors only in one bit through 3 bytes at least? > > As Peter says, the counters on the board are 16 bits. if the highest bit is read incorrectly, then the

Re: [Emc-users] Odd SSR behaviour?

These are guesses from the ignorant here; bad breaker (I've bought new duds before) or something back feeding into it??? - Original Message - From: "Gene Heskett" To: emc-users@lists.sourceforge.net Sent: Tuesday, February 2, 2016 7:14:00 PM Subject: Re: [Emc-users]

Re: [Emc-users] Odd SSR behaviour?

On Tuesday 02 February 2016 21:29:20 Todd Zuercher wrote: > These are guesses from the ignorant here; bad breaker (I've bought new > duds before) or something back feeding into it??? > I do have a couple more breakers, those skinny duals in a single place package. 15's IIRC but both on the same

Re: [Emc-users] Odd SSR behaviour?

Gene, One detail. Is the breaker only tripping when you turn OFF the SSR? If so, this actually makes a lot of sense. Some SSRs have a self-protective function that turns the SSR on for a half-cycle if an overvoltage is experienced. (This is usually an avalanche section built into the SCR

Re: [Emc-users] Odd SSR behaviour?

On Tuesday 02 February 2016 21:46:34 Jon Elson wrote: > On 02/02/2016 06:14 PM, Gene Heskett wrote: > > It basically consists of two SSR's in series, the first one being > > the main switch that enables AC power to reach the transformer by > > way of a 51 Ohm 200 watt inrush limiting resistor.

Re: [Emc-users] Prempt RT on Linux Mint

On 02/02/2016 02:08 PM, Rafael wrote: > Why use this, why not use that? This is precisely why > LinuCNC has no traction in commercial products. Unless > things have changed in the last 2 months, you cannot find > a single CNC machine or good kit on the market that comes > with LinuxCNC. Have

Re: [Emc-users] Odd SSR behaviour?

On 02/02/2016 06:14 PM, Gene Heskett wrote: > It basically consists of two SSR's in series, the first one being > the main switch that enables AC power to reach the transformer by > way of a 51 Ohm 200 watt inrush limiting resistor. And that after > the filters are charged, nominally 10 seconds,

Re: [Emc-users] Prempt RT on Linux Mint

On 2/2/2016 2:08 PM, Rafael wrote: > Why use this, why not use that? This is precisely why LinuCNC has no > traction in commercial products. Unless things have changed in the last > 2 months, you cannot find a single CNC machine or good kit on the market > that comes with LinuxCNC. Incorrect.

[Emc-users] Prempt RT on Linux Mint

Is it possible to build the Prempt-RT kernel on Linux Mint 13 based on Ubuntu Precise or Linux Mint 17 based on Ubuntu Trusty? This is to be able to use LinuxCNC uspace with a 7i92. Thanks JT -- Site24x7 APM Insight:

Re: [Emc-users] Prempt RT on Linux Mint

i dont see why not , but the patch will be different probably , i'd need to try it why use ubuntu ? , thats another can of worms to get in the way . debian now has the 2 desktops that minit as things are moving away from ubuntu ,for lots of reasons , some of it is a bit deeper , such as python

Re: [Emc-users] Mesa Reseller in America

On 02/01/2016 05:14 PM, John Thornton wrote: > I just want to announce that I'm going to be a Mesa Electronics reseller > in America. I just got conformation on my first stocking order should be > here Friday February 5th. As soon as I get everything checked in the > store will be up and running.