Re: [Emc-users] Still Crashing
Hi, Ubuntu Live CD. Is that not the BDI? I already tried upgrading Ubuntu 7.10 to heron and running the install EMC script. That crashed. :( Well I am trying the new Heron live CD. We will see what that does. Dan - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Still Crashing
Hi Dan I'll try to make this history lesson as short and painless as possible. The BDI evolved out of an early discussion that we came to call a Brain Dead Install when the EMC was still a part of NIST. It's difficult to imagine now how much trouble it was to get a running version of the EMC software back then. Paul Corner took up the challenge and produced what he officially named the BDI. When we -- fondly called EMC2 -- and He -- fondly called tuxcnc -- parted ways, we kinda let the BDI name slide from our side. Normally we refer to our CD as something like Ubuntu-EMC2. Not nearly as flashy a name but as easy as possible to install. I've still got a bunch of blank CDs that are printed with the BDI image produced for us by Rab Gordon and printed at my expense. I don't use them for public distribution any more but I still like the looks of that disk. I'll bring a stack to fest and if folk want to burn their own nostalgia version they may. There that was not so bad. Class dismissed. Rayh On Sat, 2008-05-17 at 07:33 -0400, Organic Engines wrote: Hi, Ubuntu Live CD. Is that not the BDI? I already tried upgrading Ubuntu 7.10 to heron and running the install EMC script. That crashed. :( Well I am trying the new Heron live CD. We will see what that does. Dan - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Still Crashing
On Sat, 2008-05-17 at 08:53 -0500, Ray Henry wrote: I've still got a bunch of blank CDs that are printed with the BDI image produced for us by Rab Gordon and printed at my expense. I don't use them for public distribution any more but I still like the looks of that disk. I did some work for the company that (IIRC) printed those CDs, and their in-house artist said that it was one of the best, most artistic, CD labels he'd seen, and they're in the CD printing business! I'd really like to see that image brought up to date, maybe with some Ubuntu references in it, and re-issued. It was _that_ cool! The mouse pads were pretty nice too... Thanks, Matt - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 2x 5i20 cards, how to set additional axis
Hi Aram I'm going to use a stepper example here. The principles are the same. When you look at a standard running version using three or four axes you'll see that the pins and parameters named axis in HAL only exist for the number of axes setup during the loading of that module. You'll also see that it gets this info from the INI file used during startup. That line is; # motion controller, get name and thread periods from ini file loadrt [EMCMOT]EMCMOT base_period_nsec=[EMCMOT]BASE_PERIOD servo_period_nsec=[EMCMOT]SERVO_PERIOD traj_period_nsec=[EMCMOT]TRAJ_PERIOD key=[EMCMOT]SHMEM_KEY num_joints=[TRAJ]AXES So if you add the defines for the extra three axes and modify the stuff in the traj section to 6 rather than three you will get those all listed into the HAL from the motion section of the EMC. Next you will need to connect each of those axes pins to all of the stuff they need to go through and to the proper mesa pins. For this you can pretty much copy a set of connections for any of the stock axes and simply change the number that the connection refers to. This example shows So for example, # connect position commands from motion module to step generator net Xpos-cmd axis.0.motor-pos-cmd = stepgen.0.position-cmd net Ypos-cmd axis.1.motor-pos-cmd = stepgen.1.position-cmd net Zpos-cmd axis.2.motor-pos-cmd = stepgen.2.position-cmd These are the stock connections in the sample config I chose to use. net Xpos-cmd axis.3.motor-pos-cmd = stepgen.3.position-cmd net Ypos-cmd axis.4.motor-pos-cmd = stepgen.4.position-cmd net Zpos-cmd axis.5.motor-pos-cmd = stepgen.5.position-cmd and these are the ones that MUST be added to begin the process of connecting the extra axes. You should follow this process through all of the connections needed right out to the mesa pins. I presume that you will put the first four axes on the first mesa card and the last two on the second. If so, the naming conventions for that step will be just a bit different. # Connect PID output signals to DACs. linksp Xoutput = m5i20.0.dac-00-value linksp Youtput = m5i20.0.dac-01-value linksp Zoutput = m5i20.0.dac-02-value These are stock connections for output. You'll add this to the first mesa board. linksp Zoutput = m5i20.0.dac-03-value Then you'll need to change boards for the last two. linksp Xoutput = m5i20.1.dac-00-value linksp Youtput = m5i20.1.dac-01-value You'll repeat this process for all of the motion and IO connections that need to be made. And last but very important is fixing the kinematics to match the kind of machine you are connecting these six motors to. I'm not going to touch that with any advice. Rayh BTW -- I'd abandon the attempts to express your discontent with us. You've said it enough. On Fri, 2008-05-16 at 21:13 -0600, [EMAIL PROTECTED] wrote: Hi I build system with 2 5i20 and 2 analog cards. I am looking for direction into to activate 6 axis. I did add axis last year with help of Steve. This time I will document every single click of how do that because it will be part of my theses for my school. - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Still Crashing
On Sat, 2008-05-17 at 10:04 -0400, Matt Shaver wrote: On Sat, 2008-05-17 at 08:53 -0500, Ray Henry wrote: I've still got a bunch of blank CDs that are printed with the BDI image produced for us by Rab Gordon and printed at my expense. I don't use them for public distribution any more but I still like the looks of that disk. I did some work for the company that (IIRC) printed those CDs, and their in-house artist said that it was one of the best, most artistic, CD labels he'd seen, and they're in the CD printing business! I'd really like to see that image brought up to date, maybe with some Ubuntu references in it, and re-issued. It was _that_ cool! The mouse pads were pretty nice too... Thanks, Matt Those were the days, my friend We thought they'd never end Lyrics by Mary Hopkins Rayh - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 2x 5i20 cards, how to set additional axis
Aram, Check: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?FiveAxisGantry This is done with 2 m5i20 cards. The 'bench system' works. That is 6 drives and motors connected to the m7i33's and m7i37's. The m5i20s seem to be detected in random order by the computer (the same each boot!). It was just a simple test to figure which one was #1. Maybe someone with more Linux experience knows a better way. Anyway, 2 m5i20's are no problem. Noel. Rogue Engineering 'Roguish' -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Friday, May 16, 2008 8:14 PM To: Enhanced Machine Controller (EMC) Cc: Enhanced Machine Controller Subject: [Emc-users] 2x 5i20 cards, how to set additional axis Hi I build system with 2 5i20 and 2 analog cards. I am looking for direction into to activate 6 axis. I did add axis last year with help of Steve. This time I will document every single click of how do that because it will be part of my theses for my school. Anyone who do not like me personally please do not respond! Thank you Aram. - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users No virus found in this incoming message. Checked by AVG. Version: 7.5.524 / Virus Database: 269.23.16/1448 - Release Date: 5/16/2008 7:42 PM No virus found in this outgoing message. Checked by AVG. Version: 7.5.524 / Virus Database: 269.23.16/1448 - Release Date: 5/16/2008 7:42 PM - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Still Crashing
On Sat, 2008-05-17 at 10:04 -0400, Matt Shaver wrote: I did some work for the company that (IIRC) printed those CDs, and their in-house artist said that it was one of the best, most artistic, CD labels he'd seen, and they're in the CD printing business! For the curious youngsters among us. http://www.rainnea.com/chips.htm Rayh - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Still Crashing
I did these a while ago: http://dsplabs.cs.utt.ro/~juve/emc/cd-cover/ I think I even printed a couple, somewhere around here :) Regards, Alex - Original Message - From: Ray Henry [EMAIL PROTECTED] To: [EMAIL PROTECTED]; Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: Saturday, May 17, 2008 5:57 PM Subject: Re: [Emc-users] Still Crashing On Sat, 2008-05-17 at 10:04 -0400, Matt Shaver wrote: I did some work for the company that (IIRC) printed those CDs, and their in-house artist said that it was one of the best, most artistic, CD labels he'd seen, and they're in the CD printing business! For the curious youngsters among us. http://www.rainnea.com/chips.htm Rayh - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Still Crashing
Screen shots on the CD are pretty cool. Dave On May 17, 2008, at 8:11 AM, Alex Joni wrote: I did these a while ago: http://dsplabs.cs.utt.ro/~juve/emc/cd-cover/ I think I even printed a couple, somewhere around here :) Regards, Alex - Original Message - From: Ray Henry [EMAIL PROTECTED] To: [EMAIL PROTECTED]; Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: Saturday, May 17, 2008 5:57 PM Subject: Re: [Emc-users] Still Crashing On Sat, 2008-05-17 at 10:04 -0400, Matt Shaver wrote: I did some work for the company that (IIRC) printed those CDs, and their in-house artist said that it was one of the best, most artistic, CD labels he'd seen, and they're in the CD printing business! For the curious youngsters among us. http://www.rainnea.com/chips.htm Rayh - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- --- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] starting spindle during restart in the middle of the program
Maybe you can help me - I need to make a command for restart the milling
from any line of the file but I don't know how to make this. (and probably
you idea to restart spindle will be very usefull in this case).
The reason for the restart of the spindle was to then be able to
restart at any line in the program.
If i'm not wrong, I think this feature is present in 'mini' or 'Tkemc'
gui, but will be usefull in 'axis' gui.
The only thing I made with successs was a command (via pyvcp button) do send
all axis back do origin phisically...
Thank you and best regards,
Fabio
You will need to add:
loadrt toggle count=1
loadrt not count=1
addf toggle,0 servo-thread
addf not.0 servo-thread
if the 'toggle' component and the 'not' component are the first and
only ones you are using and you have a thread called 'servo-thread'
then these exact commands will work. Otherwise you will have to modify
these commands for your configuration.
ie. if you have a
loadrt not count=1
addf not.0 servo-thread
in your config files to be able to add another 'not' component you
will need to change the lines to look like this
loadrt not count=2
addf not.1 servo-thread
If you are not using a servo-thread you will need to substitute a
different thread for the 'servo-thread'.
You will need to add this to your ?.xml file for pyvcp
label
font('courier_bold',25)/font
textSpindle/text
/label
button
halpinspindle/halpin
/button
You will need to at this to your postgui.hal file
net spindle pyvcp.spindle halui.program.pause toggle.0.in
net spinON toggle.0.out halui.spindle.stop not.0.in
net spinOff not.0.out halui.spindle.start
If you had to change the loadrt and the addf commands you will need
to change the toggle.0 and/or the not.0 to match what you added.
This will allow you to restart at any point in the program:
highlight the line you want to start from
from the drop down under the 'machine' heading - click on 'set next line'
push the step button - this is the arrow pointing right along the top
of the axis gui
push the button under the pyvcp spindle - you may need to push this
button twice - the spindle will start
start your program using the buttons across the top of the axis gui.
To stop the program and spindle at any time:
push the pyvcp spindle button - this will pause the program and stop the spindle
push the pyvcp spindle button - again - this will start the spindle
push the pause button on the top of the axis gui - this will restart
the program operation
This is not the perfect solution because you are able to push the
pause button and restart the program without the spindle running. This
may lead to reduced tool life and increased scrap parts. BE CAREFUL
thanks
Stuart
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[Emc-users] Z-Axis Drifting Problem
Dear All, We have installed Motenc-Lite on two milling machines. X and Y axis on both machines show good repeatability and show no errors after long run. Z-axis shifts conitinously by repeated motion of 100mm for 400 times, the error shifts the Z-axis approximmately 1.00mm into the job ie error is in minus direction. Z-axis Motor and encoder have been exchanged with other axis, but the error remain in the Z-axis. Regards Nasir. - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Still Crashing
Alex, What did you use to print the CD? John On 17 May 2008 at 18:11, Alex Joni wrote: I did these a while ago: http://dsplabs.cs.utt.ro/~juve/emc/cd-cover/ I think I even printed a couple, somewhere around here :) Regards, Alex - Original Message - From: Ray Henry [EMAIL PROTECTED] To: [EMAIL PROTECTED]; Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: Saturday, May 17, 2008 5:57 PM Subject: Re: [Emc-users] Still Crashing On Sat, 2008-05-17 at 10:04 -0400, Matt Shaver wrote: I did some work for the company that (IIRC) printed those CDs, and their in-house artist said that it was one of the best, most artistic, CD labels he'd seen, and they're in the CD printing business! For the curious youngsters among us. http://www.rainnea.com/chips.htm Rayh - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- --- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Z-Axis Drifting Problem
Hi Nasir Good to hear from you again. You started using EMC a long time ago. Six+ years ago at least. Does it do the same sort of sliding down when the moves are fast as opposed to slow? Is it possible that you have mechanical slip between the axis and the feedback. If this is a motor with an encoder mounted on the end of it, is there any possibility of movement between the motor and the leadscrew. I can't see how electrical interference would cause bad counting in one direction only but you might make certain your encoder cables are grounded at the drive end only. We found just a little bit of difference in the ground potential between axes on the Motinc card we used with the Mazak but I don't see how that would cause this either. Rayh On Sat, 2008-05-17 at 11:02 -0700, nasir ahmed wrote: Dear All, We have installed Motenc-Lite on two milling machines. X and Y axis on both machines show good repeatability and show no errors after long run. Z-axis shifts conitinously by repeated motion of 100mm for 400 times, the error shifts the Z-axis approximmately 1.00mm into the job ie error is in minus direction. Z-axis Motor and encoder have been exchanged with other axis, but the error remain in the Z-axis. Regards Nasir. - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Z-Axis Drifting Problem
On Sat, May 17, 2008 at 02:33:04PM -0500, Ray Henry wrote: I can't see how electrical interference would cause bad counting in one direction only but you might make certain your encoder cables are grounded at the drive end only. I agree this sounds a bit strange, but I've seen this on two occasions. Once the encoder sensor was physically dirty, and in the other case there was electrical noise due to (iirc) bad grounding. In both these cases, the position error was consistently biased in one particular direction. You're right to suggest not dismissing electrical interference in this case. Jeff - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Still Crashing
Hi John, this are stick-on labels, which I printed in a regular deskjet printer. I glued then by hand on the CD (the stickers came with a device which allows to center it on a blank CD). I think I read on the web, that these might cause issues at high speed, but that's not been my experience so far (couple years). Regards, Alex - Original Message - From: John Thornton [EMAIL PROTECTED] To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: Saturday, May 17, 2008 11:16 PM Subject: Re: [Emc-users] Still Crashing Alex, What did you use to print the CD? John On 17 May 2008 at 18:11, Alex Joni wrote: I did these a while ago: http://dsplabs.cs.utt.ro/~juve/emc/cd-cover/ I think I even printed a couple, somewhere around here :) Regards, Alex - Original Message - From: Ray Henry [EMAIL PROTECTED] To: [EMAIL PROTECTED]; Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Sent: Saturday, May 17, 2008 5:57 PM Subject: Re: [Emc-users] Still Crashing On Sat, 2008-05-17 at 10:04 -0400, Matt Shaver wrote: I did some work for the company that (IIRC) printed those CDs, and their in-house artist said that it was one of the best, most artistic, CD labels he'd seen, and they're in the CD printing business! For the curious youngsters among us. http://www.rainnea.com/chips.htm Rayh - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- --- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Scale and Rotate
Hi, Do scale and/or rotate exist in EMC2? Where is my PyVCP hiding? Thanks, Dan -- Please note my new shipping address. -- Daniel Kavanagh Phone (850)443-3284 Organic Engines http://www.organicengines.com 1888 Mills St., [EMAIL PROTECTED] Tallahassee, FL 32310 - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Z-Axis Drifting Problem
Focusing on possible mechanical sources: A Z-axis not capable of lifting the spindle at max slew, but sized well enough to drive the spindle down, would behave in this manner. Glenn -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jeff Epler Sent: Saturday, May 17, 2008 3:17 PM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] Z-Axis Drifting Problem On Sat, May 17, 2008 at 02:33:04PM -0500, Ray Henry wrote: I can't see how electrical interference would cause bad counting in one direction only but you might make certain your encoder cables are grounded at the drive end only. I agree this sounds a bit strange, but I've seen this on two occasions. Once the encoder sensor was physically dirty, and in the other case there was electrical noise due to (iirc) bad grounding. In both these cases, the position error was consistently biased in one particular direction. You're right to suggest not dismissing electrical interference in this case. Jeff - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
