Re: [Emc-users] air pressure sensors for up to 10 psi

[Milosz K.]

The 3 bar GM MAP sensor has been well characterized by the DIY EFI
community.

Linear output. 1.1kPa @ 0v and 315.5kPa @ 5v.

On Sat, May 28, 2022, 11:44 AM gene heskett  wrote:

> Greetings all;
>
> I'm getting frustrated, but I know it has to be out there, someplace.
> I need a differntial air pressure sensor, differential so it references
> local barometric as its reference zero, and up to 10 psi, with a 3 wire
> analog output.
> I've solved the control aspect, but not how to detect a pressure to
> accomplish the control.
>
> automotive EGR types seem seem the most promising as they are affordable
> and 2 port gismo's but all I can find just lists the vehicles it fits and
> works with, but zero info on how to hook it up and get an analog reading
> out of it.  "MAP" sensors whose internal reference is a good vacumm can
> have their signals clipped and massaged into something usable, but so far
> I've bought 4 w/o finding a working one that actually reads the 14.7 psia
> of normal air.
>
> So how are you folks solving that problem?
>
> Or are you burning up the shop compressor feeding your misters? I can't
> see that as being an acceptible solution since none of those have an
> intake muffler so you can still hear yourself think.
>
> What I have cobbled up at the moment is giving me more than enough air to
> run a mister, and I can't hear it running over the 2 fans in this 6040
> mill. One in the vfd is really noisy.
>
> Thank you.
>
> Cheers, Gene Heskett.
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author, 1940)
> If we desire respect for the law, we must first make the law respectable.
>  - Louis D. Brandeis
>
>
>
>
>
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Re: [Emc-users] motor coolant for water cooled spindles.

[Milosz K.]

Once biologics get into a system, clean out is the first step. However, no
amount of filtration can remove them all, if you don't kill all the
bacteria it will come back.

Just passing along what I learned from a Rustlick rep many years ago.

On Mon, Jan 17, 2022, 6:29 PM gene heskett  wrote:

> On Monday, January 17, 2022 12:06:19 PM EST Milosz K. wrote:
> > Triadine 20 at no more than 1oz per 5 gallons.
> >
> Not too bad a price once Amazon breaks up the 6 pack minimum.  OTOH, it
> does read like nasty, dangerous stuff. I'll see how well todays cleanup
> works, first.
>

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Re: [Emc-users] motor coolant for water cooled spindles.

[Milosz K.]

Triadine 20 at no more than 1oz per 5 gallons.

On Sun, Jan 16, 2022, 3:37 PM gene heskett  wrote:

> I just fired up the 6040 to make a pocket for a 3mm sq nut. Noted that
> the coolant tank was down about an inch from evaporation, but hand hand
> on the tank could feel the pump buzzing so I assumed it was working. Its
> an 80 gallon an hour submersible, probably for aquariums and such. So I
> measure the nut to see how big a "pocket" to make to hold the nut.
>
> About 90% done with that, I noted an air bubble in the hoses to the top
> of the motor was still there, feel the motor and it is pretty warm, check
> the tank, cold. Lift the lid and find about 1/8" of dirty grey mold
> sealing the top. So I'm back to trying to clean it out so I put half a
> cup of lysol bathroom spray in it. But haven't disconnected it so I can
> dump the tank in the back yard. Yet.
>
> Obviously the modern lysol isn't the magic twanger to keep it sweet. So
> what do you folks use to keep a closed system sterile, non-corrosive and
> functional?
>
> Thanks all.
>
> Cheers, Gene Heskett.
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author, 1940)
> If we desire respect for the law, we must first make the law respectable.
>  - Louis D. Brandeis
> Genes Web page 
>
>
>
>
>
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Re: [Emc-users] CNC controlled, plasma torch

[Milosz K.]

I cut near flammables and my solution is cutting over a water bed with a
slicone funnel on the torch.

This is a photo for illustration.
https://images.app.goo.gl/cUFKnX5iMdVrHPTH6



On Fri, Jan 7, 2022, 4:45 PM Nicklas SB Karlsson  wrote:

> Anyone used Linuxcnc with plasma torch here.
>
>
> There is another major problem, one third of building is allocated for
> firewood storage. Need a good way to keep sparks away from it.
>
>
> Nicklas Karlsson
>
>
>
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Re: [Emc-users] electrical inspection pain

[Milosz K.]

He is referencing state statue WAC 296-46B-903. 2005 NEC phased in a listed
requirement in Article 110. I'm not sure how it has evolved but there might
be exceptions now, though, state requirements usually prevail over NEC in
my experience. Could be a dead end but worth a look.

I faced this problem with semiconductor equipment, in Boston, and our only
solution was to have it field certified according to NFPA 79, by Intertek.

A field stamp technically makes that machine "listed" and if your equipment
has been evaluated before that might be sufficient. Since the machine is
European you might try searching TUV database as well for IEC 60204
compliance.

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Re: [Emc-users] Metallurgical Advice?

[Milosz K.]

Brazing with Aluminum Bronze would be the preferable alternative to welding.

Lock-N-Stitch pins are also another option. Advantage is it's a cold
process, but it's rather slow.


On Wed, Jul 28, 2021, 1:28 PM Todd Zuercher <

>
> Is there any hope of repairing the table?  Are we going to have to replace
> the whole table?  Could the crack be welded, or is that a bad idea?  My
> main fear is that warpage issues will cause the linear guides to bind.
> (The table surface can always be re-milled flat.)  The crack isn't gaping
> or misaligned, and the table doesn't "look" warped now that It's cool.
>

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Re: [Emc-users] Meanwell SE600-48 Power Supply

[Milosz K.]

The SE600 does not have fan speed control, the fan is always on and quite
loud. If it's not running you have something to troubleshoot.

On Fri, Jul 16, 2021, 6:23 PM Chris Albertson 
wrote:

> I think maybe the fan does not turn on until it needs to be on.  There
> could be a temperature sensor.  If the unit is not warmth it
> makes sense that the fan is off
>
> Is the fan 2, 3, or 4 wires?  If 3 or 4 then this means one wire is a
> tachometer used for speed feedback, and they would not have that if the fan
> speed was not controlled
>
> Finally, check the voltage on thefan motor,  If this is a 12 volt fan and
> there is 12 volts and the fan is not moving then the fan is broken.But
> if there is something like 3 volts then the fan controller has decided no
> cooling is needed.
>
> On Fri, Jul 16, 2021 at 12:35 PM Alan Condit 
> wrote:
>
> >
> > Chris,
> >
> > The unit doesn’t seem to be warm.
> > I adjusted the voltage down to 42 volts, to provide some headroom. I am
> > using KL5056 stepper drivers and they say max 50 volts. There is
> definitely
> > power to the fan because if I try to turn it it snaps back to the fixed
> > position. The voltage is rock steady at 42 volts.
> >
> > I wonder if it is just the fan or fan controller that is bad.
> >
> > I bought the power supply a year or so ago but this is the first time I
> > have applied power to it. Maybe I will have to open it up and see if I
> > could replace the fan.
> >
> > Alan
> >
> >
> > > From: Chris Albertson 
> > > Subject: Re: [Emc-users] Meanwell SE600-48 Power Supply
> > > Date: July 15, 2021 at 12:21:10 PM CDT
> > > To: "Enhanced Machine Controller (EMC)" <
> emc-users@lists.sourceforge.net
> > >
> > >
> > >
> > > If you place your hand on the power supply and feel no heat, then I'd
> > > expect the fan to be off.
> > >
> > > I some a good size power resistors mounted to a heat sink with a fan
> > that I
> > > used for testing power supplies.  Testing with no dummy load is not
> very
> > > meaningful.   The load is set up so it can be quickly rewired with
> > > resistors in series or parallel in different ways using a terminal
> block.
> > >
> > > On Thu, Jul 15, 2021 at 9:19 AM Alan Condit 
> > wrote:
> > >
> > >> I am building a new controller cabinet. I installed a Meanwell
> SE600-48
> > >> power supply. When I turn on the power supply the fan doesn’t turn on.
> > If I
> > >> leave the power supply on for a little while I hear an intermittent
> > >> clicking (like a relay) but no fan. Does it have some kind of
> > temperature
> > >> control on the fan? Is it not turning on because I currently have
> > virtually
> > >> no load on the power supply?
> > >>
> > >> Thanks,
> > >> Alan
> > >>
> > >> ___
> > >> Emc-users mailing list
> > >> Emc-users@lists.sourceforge.net
> > >> https://lists.sourceforge.net/lists/listinfo/emc-users
> > >>
> > >
> > >
> > > --
> > >
> > > Chris Albertson
> > > Redondo Beach, California
> > >
> >
> >
> > ___
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> > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
>
>
> --
>
> Chris Albertson
> Redondo Beach, California
>
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Re: [Emc-users] all the MESA cards talk made me think

[Milosz K.]

I should have said that the 7i92 performs the same function as the PCI
card. Since it's interface is Ethernet you can't just pop it into the PCI
bus. Yes, you can talk to the 7i92 with just a plain network card or on
board port from the PC. So it would be NIC->7i92->BOB->machine.

The 7i92 still needs a BOB as it shouldn't connect to hardware directly.
You could use a 7i92 and your existing BOB or if you want to scrap your
current BOB, you could use a 7i96 which is basically a 7i92 & a BOB all in
one package. A 7i96 would be NIC->7i96-> machine

On Sun, Jun 13, 2021, 10:29 PM R C  wrote:

>
> On 6/13/21 8:14 PM, Milosz K. wrote:
> > Hi Ron,
> >
> > The MESA card, 7i92 as we are talking about in this case would replace
> your
> > failed PCI card.
>
> Uhm, I thought that would be an ethernet card?
>
> > We might need a bit more info on how you have the 2 machines wired and
> > implemented in your present config to suggest the correct MESA solution.
>
> well,  Originally the machines came in an Paxton/Patterson enclosure,
> with "optistep" electronics,  which is basically a parallel port
> "thing"  but the pinouts are all different.  The opti step has "onboard"
> simple  stepperdrivers.
>
>
> What I did in both, is replaced the electronics (optistep), by using
> stepperdrivers (like those DM542 ones), and used a parallel port DB25
> BOB/breakout to connect it to a PC with a PCI parallel port card.
>
>
> I don't mind at all throwing out the PCI card, BOB and use a mesa card
> to drive the stepper drivers.  and if I can talk to the/a MESA card
> with a regulat ethernet card, that would be great.
>
>
> So basically,  I might just replace "everything" between the PC and the
> stepper drivers (DM542)  if that makes sense.
>
>
>
> Ron
>
>
>
>
> >
> > On Sun, Jun 13, 2021, 10:06 PM John Dammeyer 
> wrote:
> >
> >> Ron,
> >> Ethernet from your PC to the 7i92H which has two 26 pin headers.  Ribbon
> >> cable from that to 25pin DB-25.  Male or Female depending on your Break
> Out
> >> Board.  Mine plugs into the PMDX-126 and a far east Cheap BoB because
> the
> >> PMDX126 doesn't bring out all the outputs on the second port.
> >>
> >> If the picture makes it through the 7i92H is sitting on the bottom of
> the
> >> cabinet at the left and a ribbon cable up to the PMDX126.  Or I plugged
> in
> >> the parallel port cable sitting loose on the right.
> >>
> >> It's that easy.
> >>
> >> John
> >>
> >>
> >>> -Original Message-
> >>> From: R C [mailto:cjv...@gmail.com]
> >>> Sent: June-13-21 6:55 PM
> >>> To: emc-users@lists.sourceforge.net
> >>> Subject: Re: [Emc-users] all the MESA cards talk made me think
> >>>
> >>> Hi Ralph,
> >>>
> >>> well th ebreakout, BOB, has these buffered ports..� and it sounds like
> >>> I'd still need a parallel port?� The configuration, bitfile,� would
> that
> >>> be a linuxcnc thing?
> >>>
> >>> (as I mentioned� previous;y,� I wouldn't mind� leaving parallel PCI
> >>> cards behind, and use something ethernet (if those are regular ethernet
> >>> cards?)
> >>>
> >>>
> >>> thanks,
> >>>
> >>>
> >>> Ron
> >>>
> >>> On 6/13/21 7:19 PM, Ralph Stirling wrote:
> >>>> A 7i92 could run twelve steppers full speed.  You load the logic
> >> configuration you want ("bitfile") for your application.  It could have
> >>> the same pinout as your parallel port to plug right into your existing
> >> breakout, but run your steppers much smoother and faster.
> >>>> -- Ralph
> >>>>
> >>>> On Jun 13, 2021 6:13 PM, R C  wrote:
> >>>> CAUTION: This email originated from outside the Walla Walla University
> >> email system.
> >>>>
> >>>> I just looked up what a PMDX132 is,  part of my problem is that the
> >>>> parallel PCI card I used appears to be broken, and of course they are
> >>>> harder to get.  So I wouldn't mind switching to an ethernet based
> >>>> controller in the PC side (Dell T5500/T7500).
> >>>>
> >>>> I have seen the 7i92  mentioned, and others,  can they do multiple
> >> stepper motors?  (right now I am using a parallel BOB,  that
> >>> connects to  steopper drivers (ala DM542

Re: [Emc-users] all the MESA cards talk made me think

[Milosz K.]

Hi Ron,

The MESA card, 7i92 as we are talking about in this case would replace your
failed PCI card.

We might need a bit more info on how you have the 2 machines wired and
implemented in your present config to suggest the correct MESA solution.

On Sun, Jun 13, 2021, 10:06 PM John Dammeyer  wrote:

> Ron,
> Ethernet from your PC to the 7i92H which has two 26 pin headers.  Ribbon
> cable from that to 25pin DB-25.  Male or Female depending on your Break Out
> Board.  Mine plugs into the PMDX-126 and a far east Cheap BoB because the
> PMDX126 doesn't bring out all the outputs on the second port.
>
> If the picture makes it through the 7i92H is sitting on the bottom of the
> cabinet at the left and a ribbon cable up to the PMDX126.  Or I plugged in
> the parallel port cable sitting loose on the right.
>
> It's that easy.
>
> John
>
>
> > -Original Message-
> > From: R C [mailto:cjv...@gmail.com]
> > Sent: June-13-21 6:55 PM
> > To: emc-users@lists.sourceforge.net
> > Subject: Re: [Emc-users] all the MESA cards talk made me think
> >
> > Hi Ralph,
> >
> > well th ebreakout, BOB, has these buffered ports..� and it sounds like
> > I'd still need a parallel port?� The configuration, bitfile,� would that
> > be a linuxcnc thing?
> >
> > (as I mentioned� previous;y,� I wouldn't mind� leaving parallel PCI
> > cards behind, and use something ethernet (if those are regular ethernet
> > cards?)
> >
> >
> > thanks,
> >
> >
> > Ron
> >
> > On 6/13/21 7:19 PM, Ralph Stirling wrote:
> > > A 7i92 could run twelve steppers full speed.  You load the logic
> configuration you want ("bitfile") for your application.  It could have
> > the same pinout as your parallel port to plug right into your existing
> breakout, but run your steppers much smoother and faster.
> > >
> > > -- Ralph
> > >
> > > On Jun 13, 2021 6:13 PM, R C  wrote:
> > > CAUTION: This email originated from outside the Walla Walla University
> email system.
> > >
> > >
> > > I just looked up what a PMDX132 is,  part of my problem is that the
> > > parallel PCI card I used appears to be broken, and of course they are
> > > harder to get.  So I wouldn't mind switching to an ethernet based
> > > controller in the PC side (Dell T5500/T7500).
> > >
> > > I have seen the 7i92  mentioned, and others,  can they do multiple
> stepper motors?  (right now I am using a parallel BOB,  that
> > connects to  steopper drivers (ala DM542), which drive the actual
> steppers.)
> > >
> > > thanks,
> > >
> > > Ron
> > >
> > > On 6/13/21 7:03 PM, Gerrit Visser wrote:
> > >> I choose a 7i92 to connect my PC with a PMDX132 to run PathPilot
> (which has LinuxCNC inside). Depending on your BOB it might
> > be plug-play with pre-build .bit files to configure the Mesa card.
> > >> My reason for going with ethernet version was to reduce electrical
> grounding issues. Had too many of those in the past with
> > direct connected stuff. It also expands the choice of PC to run LinuxCNC
> on, doesn't need a pci or pcie slot this way.
> > >>
> > >> Gerrit
> > >>
> > >> -Original Message-
> > >> From: R C 
> > >> Sent: June 13, 2021 8:43 PM
> > >> To: linuxcnc-users-list 
> > >> Subject: [Emc-users] all the MESA cards talk made me think
> > >>
> > >> Hello,
> > >>
> > >>
> > >> I have a 'desktop' mill and lathe (both Sherline),  and I am using a
> parallel BOB and  printer ports to run  them.  Of course one of
> > them just  gave up (PCI printer card),  I do have a spare but they are
> harder to come by, besides, the setup is not really ideal?
> > >>
> > >>
> > >> What would be the best way to replace the BOB-LPT stuff?  (these
> things are desktop CNC machines, I am playing/learning for
> > fun, I am not trying to reliably machine F22 raptor jet engine parts, I
> am mostly turning stock into scrap).
> > >>
> > >>
> > >> I see some cards that are in the $50 etc range,  and there are the
> ones that use  ether/cat5 connections (are 'regular' ethernet
> > cards used with
> > >> those?)
> > >>
> > >>
> > >> I am looking at a lathe that has 2 steppers, and it has a quadrature
> encoder,  the mill has 3 steppers, and planning on adding a
> > quadrature encoder).
> > >>
> > >>
> > >> thanks,
> > >>
> > >>
> > >> Ron
> > >>
> > >>
> > >>
> > >> ___
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> > >> Emc-users@lists.sourceforge.net
> > >>
> https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-
> > users&data=04%7C01%7Cralph.stirling%40wallawalla.edu
> %7C4d9e36c4815346dc09b208d92ed1aa20%7Cd958f048e43142779c
> >
> 8debfb75e7aa64%7C0%7C0%7C637592300318138010%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiL
> >
> CJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=4cZoKdR7JX7mGOkAyDqO7mG9rDLjlHLtAN6aNNSP%2Brs%3D&reser
> > ved=0
> > >>
> > >>
> > >>
> > >> ___
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> > >>
> https://nam12.safelinks

Re: [Emc-users] .ini file questions

[Milosz K.]

For AXIS INI setting "EDITOR=gedit" to work, you must have gedit installed.

On Thu, Jul 11, 2019 at 1:15 PM John Dammeyer 
wrote:

> > The value "HOME_OFFSET=" is the number value given to the point where
> > the home switch changes during the home_latch move.
> > The value "HOME=" is the position the joint will move to (relative to the
> > "HOME_OFFSET=" point) at the feed rate specified by "HOME_FINAL_VEL=".
> >
> > So If you're using your negative limit switch as the home switch, and
> specify
> > HOME_OFFSET=-1 and HOME=0 after probing the switch the axis will move
> > to 1" (or 1mm) away from the switch with that point given the value of 0
> in
> > the g53 machine coordinates.  If you were to set HOME_OFFSET=0 and
> > HOME=1, the point the machine would stop would still be the same but that
> > position would now be given the value of 1 in the machine coordinates.
> >
> > Todd Zuercher
>
> Thanks.  I tried all that and now it's perfect for me.  It allows the
> fairly significant X axis backlash to be taken out without re-tripping the
> home/limit switch which was a bit of an issue. To get around it I reduced
> the backlash setting which caused its own set of problems.  All good now.
>
> Now for the EDITOR setting.   I can load a G-Code file, select the menu
> entry to edit a file.  If it's the LCNC one loaded at start-up I'm told
> it's read only.  If it's one of mine, nothing happens.  No editor.
> Nothing.
>
> I've been using Mousepad outside of LCNC but setting Editor to Mousepad
> doesn’t work nor does setting it to the desktop link
> /usr/share/applications.   Unlike Windows, unfortunately the link doesn't
> actually specify where the executable is.
>
> So what can I do.  How do I specify the editor so that it runs with the
> currently loaded G-Code file?
>
> From the doc:
> EDITOR = gedit - The editor to use when selecting File > Edit to edit the
> G code from the AXIS menu. This must be configured for this menu item to
> work. Another valid entry is gnome-terminal -e vim.
>
>
>
>
>
>
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Re: [Emc-users] Calculate Servo Power

[Milosz K.]

If you mean by an open ended timing belt that is fixed at both ends and the
motor is traversing along the belt then, yes. One glaring omission in my
initial reply was not accounting for a speed reduction. I'm guess there
will be one between your servo and timing belt pulley. In that case you
have to account for speed reduction:

w/N
alpha/N
Jreflected = ((gantry m + motor m) * R^2) /N^2
Jt=Jreflected + Jmotor + Jreducer
Trl=(Ffriction * R)/(n*N)

2015-09-10 9:55 GMT-04:00 Dave Cole :

> Yes.
>
> On 9/10/2015 7:36 AM, John Thornton wrote:
> > It's a timing belt drive, would that be close to a rack and pinion?
> >
> > JT
> >
> > On 9/9/2015 11:58 PM, Milosz K. wrote:
> >> John,
> >>
> >> Assuming this is a rack & pinion type configuration:
> >>
> >> angular v (w) = linear vel * pulley radius (R)
> >> angular accel (alpha) = linear accel * R
> >> Jreflected = (gantry mass + motor mass) * R^2
> >> inertia total (Jt) = Jmotor + Jreflected
> >> Torque reflected (Trl) = (Ffriction * R)/efficiency (n)
> >> Torque peak(Tp) = Trl + ((Jt*alpha)/n)
> >> P = Tp*w
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> 2015-09-09 14:12 GMT-04:00 John Thornton :
> >>
> >>> Thanks for all the info, now to chew on this a bit.
> >>>
> >>> JT
> >>>
> >>> On 9/9/2015 5:53 AM, John Thornton wrote:
> >>>> I need to calculate the power needed to move a gantry. I assume that
> >>>> mass and velocity and acceleration are the key factors. Knowing those
> >>>> how do you figure out the watts needed. This is not a milling machine
> so
> >>>> no cutting forces need to be taken into effect. I'll be moving the
> >>>> gantry with timing belts.
> >>>>
> >>>> Thanks
> >>>> JT
>
--
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Re: [Emc-users] Calculate Servo Power

[Milosz K.]

John,

Assuming this is a rack & pinion type configuration:

angular v (w) = linear vel * pulley radius (R)
angular accel (alpha) = linear accel * R
Jreflected = (gantry mass + motor mass) * R^2
inertia total (Jt) = Jmotor + Jreflected
Torque reflected (Trl) = (Ffriction * R)/efficiency (n)
Torque peak(Tp) = Trl + ((Jt*alpha)/n)
P = Tp*w







2015-09-09 14:12 GMT-04:00 John Thornton :

> Thanks for all the info, now to chew on this a bit.
>
> JT
>
> On 9/9/2015 5:53 AM, John Thornton wrote:
> > I need to calculate the power needed to move a gantry. I assume that
> > mass and velocity and acceleration are the key factors. Knowing those
> > how do you figure out the watts needed. This is not a milling machine so
> > no cutting forces need to be taken into effect. I'll be moving the
> > gantry with timing belts.
> >
> > Thanks
> > JT
> >
> >
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Re: [Emc-users] Home vs false limits

[Milosz K.]

Looks like Z-8.8323 is the extent of travel. I'm with John on this. You
more than likely have a persistent G92 Z offset applied. MDI a G92.1 or
make it the first line of your program.

Excerpt from Gene's NGC available last night.

o IF [#<_do_outer> gt 0.1] (so zero won't)
G10 L2 P1 x0 y0 z0
G1 F40 Z-8.2823 x#<_x_start> y#<_y_outer_center>(just clear alu bar)
G92 x0 y0 Z0(rest of loop references this point)
#<_G3X> =  0.718200
#<_G3Y> = -1.973400
#<_G3I> = -0.718200
#<_G3J> = 1.973400
#<_tmpz> = 0.0
#<_x_arc_start> = 0.7182000
#<_y_arc_start> = -1.9734000
#<_y_end_tab> = [#<_y_arc_start> + -0.7000]
G1 F10 z#<_tmpz> x#<_G3X> y#<_G3Y>
o WHILE   [#<_tmpz> gt #<_bar_bottom>]
G61 (exact path mode)
G1 F10 y#<_y_end_tab>  (go out to outer end of clamp tab)
#<_tmpz> = [#<_tmpz> - 0.02500]
M3
G04P1
G1 F20 z#<_tmpz>
(cut back to circle start point)
G1 F20 x#<_x_arc_start> y#<_y_arc_start>
G1 F20 z0.
G1 F10 x#<_G3X>
(G3 x#<_G3X> Y#<_G3Y> I#<_G3I> J#<_G3J>)
G1 F10 x#<_G3I>
G1 F10 z#<_tmpz>
G1 F10 y#<_y_end_tab>
G1 F20 z0. (clear reset moves)
o ENDWHILE
o ENDIF
M5 ( stop spindle )
G0 z4
M2

2015-08-21 10:29 GMT-04:00 Gene Heskett :

> On Friday 21 August 2015 07:38:11 John Thornton wrote:
>
> > On 8/20/2015 9:09 PM, Gene Heskett wrote:
> > > On Thursday 20 August 2015 19:40:10 andy pugh wrote:
> > > Inside the IF for each loop, is a
> > > G10 L2 P1 X0 Y0 Z0 (to restore the homed co-ords to G54)
> > > G92 X0 Y0 Z0 (to make sure its not off a 0.0001)
> > >
> > >
> > > Cheers, Gene Heskett
> >
> > Gene,
> >
> > You don't want to "set" the G92 offset you want to "clear" the G92
> > offset. As soon as you "set" a G92 offset you will get the out of
> > bounds error.
>
> Is this not a bug then?  It sure seems to fit the description.
>
> > I get it all the time on my plasma. Use G92.1 not G92 X0 Y0 Z0.
>
> I looked at that, the manual description  didn't appear to be what I
> wanted. I'll re-read it again. Maybe I didn't understand what I was
> reading.  IMO if a plain G92 X0Y0Z0 is also diddling with the machine
> map established by homeing, thats a bug.  A humungous one at that.
>
> > JT
>
> Thanks John.
>
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> Genes Web page 
>
>
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Re: [Emc-users] Home vs false limits

[Milosz K.]

Gene,

What are your axis limits as set in the INI file?

2015-08-20 22:15 GMT-04:00 Gene Heskett :

> On Thursday 20 August 2015 20:28:42 Milosz K. wrote:
>
> > G92.1 will also do this and clear the parameters in which the offsets
> > are stored so they are not reloaded next run.
> >
> I had that in there, took it out when I couldn't see that it was doing
> anything, but probably should put it back in as I am also seeing a per
> run attempt, growth in the x position offset in the backplot.
>
> Thanks Milosz.
>
> > On Aug 20, 2015 8:11 PM, "Gene Heskett"  wrote:
> > > On Thursday 20 August 2015 19:40:10 andy pugh wrote:
> > > > On 21 August 2015 at 00:32, Gene Heskett  wrote:
> > > > > What I need is the command line to use in the gcode file, right
> > > > > at the top, which will reset ALL the co-ordinate systems to the
> > > > > current G53 (machine) values.
> > > >
> > > > G10 L2 P1 X0 Y0 Z0 A0 B0 C0 U0 V0 W0
> > >
> > > I had that line in the file at one point, but still got the phantom
> > > errors, reporting axis limits are exceeded and it refused to run.
> > > I'm not, in this code, using more than the default G54 mapping.
> > > I'll go put that back in before any moves are commanded & see if its
> > > what I need.  But I can stop at Z0 as the A is a place holder for
> > > when I get a decent rotary table & motorize it.
> > >
> > > > G10 L2 P2 X0 Y0 Z0 A0 B0 C0 U0 V0 W0
> > > > G10 L2 P3 X0 Y0 Z0 A0 B0 C0 U0 V0 W0
> > > > G10 L2 P4 X0 Y0 Z0 A0 B0 C0 U0 V0 W0
> > > > G10 L2 P5 X0 Y0 Z0 A0 B0 C0 U0 V0 W0
> > > > G10 L2 P6 X0 Y0 Z0 A0 B0 C0 U0 V0 W0
> > > > G10 L2 P7 X0 Y0 Z0 A0 B0 C0 U0 V0 W0
> > > > G10 L2 P8 X0 Y0 Z0 A0 B0 C0 U0 V0 W0
> > > > G10 L2 P9 X0 Y0 Z0 A0 B0 C0 U0 V0 W0
> > > >
> > > > Somehow I suspect that you don't really want  to do what you think
> > > > you want to do.
> > >
> > > All I am trying to do is draw a pair of circles whose geometric
> > > centers differ in the Y axis.  Usually thats all it takes to make
> > > the output of arcbuddy.py 100% usable. But not this time it seems.
> > >
> > > Thanks Andy
> > >
> > > Cheers, Gene Heskett
> > > --
> > > "There are four boxes to be used in defense of liberty:
> > >  soap, ballot, jury, and ammo. Please use in that order."
> > > -Ed Howdershelt (Author)
> > > Genes Web page <http://geneslinuxbox.net:6309/gene>
> > >
> > >
> > > 
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>
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> Genes Web page <http://geneslinuxbox.net:6309/gene>
>
>
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Re: [Emc-users] Home vs false limits

[Milosz K.]

G92.1 will also do this and clear the parameters in which the offsets are
stored so they are not reloaded next run.
On Aug 20, 2015 8:11 PM, "Gene Heskett"  wrote:

> On Thursday 20 August 2015 19:40:10 andy pugh wrote:
>
> > On 21 August 2015 at 00:32, Gene Heskett  wrote:
> > > What I need is the command line to use in the gcode file, right at
> > > the top, which will reset ALL the co-ordinate systems to the current
> > > G53 (machine) values.
> >
> > G10 L2 P1 X0 Y0 Z0 A0 B0 C0 U0 V0 W0
>
> I had that line in the file at one point, but still got the phantom
> errors, reporting axis limits are exceeded and it refused to run.
> I'm not, in this code, using more than the default G54 mapping.  I'll go
> put that back in before any moves are commanded & see if its what I
> need.  But I can stop at Z0 as the A is a place holder for when I get a
> decent rotary table & motorize it.
>
>
> > G10 L2 P2 X0 Y0 Z0 A0 B0 C0 U0 V0 W0
> > G10 L2 P3 X0 Y0 Z0 A0 B0 C0 U0 V0 W0
> > G10 L2 P4 X0 Y0 Z0 A0 B0 C0 U0 V0 W0
> > G10 L2 P5 X0 Y0 Z0 A0 B0 C0 U0 V0 W0
> > G10 L2 P6 X0 Y0 Z0 A0 B0 C0 U0 V0 W0
> > G10 L2 P7 X0 Y0 Z0 A0 B0 C0 U0 V0 W0
> > G10 L2 P8 X0 Y0 Z0 A0 B0 C0 U0 V0 W0
> > G10 L2 P9 X0 Y0 Z0 A0 B0 C0 U0 V0 W0
> >
> > Somehow I suspect that you don't really want  to do what you think you
> > want to do.
>
> All I am trying to do is draw a pair of circles whose geometric centers
> differ in the Y axis.  Usually thats all it takes to make the output of
> arcbuddy.py 100% usable. But not this time it seems.
>
> Thanks Andy
>
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> Genes Web page 
>
>
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