Re: [Emc-users] Weird EMC2 tuning issue (direction reverses intermittently)

2009-07-07 Thread Andy Pugh
2009/7/5 Jeffrey Pease jpe...@peasej.com: One mysterious issue I've seen that I'm trying to figure out is that very, very rarely, a movement command to the milling machine will make an axis move the correct distance in the INCORRECT direction. Is there any possibility that this is a

Re: [Emc-users] Weird EMC2 tuning issue (direction reverses intermittently)

2009-07-07 Thread Gene Heskett
On Tuesday 07 July 2009, Andy Pugh wrote: 2009/7/5 Jeffrey Pease jpe...@peasej.com: One mysterious issue I've seen that I'm trying to figure out is that very, very rarely, a movement command to the milling machine will make an axis move the correct distance in the INCORRECT direction. Is there

Re: [Emc-users] Weird EMC2 tuning issue ( direction reverses intermittently)

2009-07-07 Thread Gene Heskett
On Tuesday 07 July 2009, Luc Claeys wrote: Hi, Gene Heskett wrote: On Tuesday 07 July 2009, Luc Claeys wrote: I don't see value that specifically affects the direction valid time, but I definitely could be missing something... Someone will probably chime in here. See parameters

Re: [Emc-users] Weird EMC2 tuning issue (direction reverses intermittently)

2009-07-07 Thread Glenn R. Edwards
To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] Weird EMC2 tuning issue (direction reverses intermittently) On Tuesday 07 July 2009, Andy Pugh wrote: 2009/7/5 Jeffrey Pease jpe...@peasej.com: One mysterious issue I've seen that I'm trying to figure out is that very, very rarely

Re: [Emc-users] Weird EMC2 tuning issue (direction reverses intermittently)

2009-07-07 Thread Jon Elson
Andy Pugh wrote: 2009/7/5 Jeffrey Pease jpe...@peasej.com: One mysterious issue I've seen that I'm trying to figure out is that very, very rarely, a movement command to the milling machine will make an axis move the correct distance in the INCORRECT direction. Is there any

Re: [Emc-users] Weird EMC2 tuning issue ( direction reverses intermittently)

2009-07-07 Thread Jeffrey Pease
Just wanted to thank everybody for all the excellent feedback. At the moment I'm leaning towards this being a cable shielding or grounding issue with my driver board (as suggested first by, I believe James Reed). I have had suspicions that I had some sort of grounding problem for a while,

Re: [Emc-users] Weird EMC2 tuning issue (direction reverses intermittently)

2009-07-07 Thread Gene Heskett
-users] Weird EMC2 tuning issue (direction reverses intermittently) On Tuesday 07 July 2009, Andy Pugh wrote: 2009/7/5 Jeffrey Pease jpe...@peasej.com: One mysterious issue I've seen that I'm trying to figure out is that very, very rarely, a movement command to the milling machine will make an axis

Re: [Emc-users] Weird EMC2 tuning issue (direction reverses intermittently)

2009-07-06 Thread Damian Slavek
I would suggest checking this page: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Stepper_Drive_Timing It only has the HCNC pro listed but I believe they use the same driver chips. I have the HCNC Pro and have not seen the issues you mention, although like Terry already mentioned, stepconf uses

Re: [Emc-users] Weird EMC2 tuning issue (direction reverses intermittently)

2009-07-06 Thread Damian Slavek
One other thing, I would also suggest you disable Idle current reduction on your controller board if that is an option. I was on the HCNC list for quite some time and many people had strange issues when idle current reduction was enabled, apparently the driver chips also have that feature built in

Re: [Emc-users] Weird EMC2 tuning issue (direction reverses intermittently)

2009-07-06 Thread Jeffrey Pease
Thanks for everyone's responses. I get a digest version of the mail list responses, so I'll go ahead and reply to everybody's at one time. Robert: I haven't spent much time messing with halscope, but I'm not sure how to best use it here given the intermittent nature of the problem.

Re: [Emc-users] Weird EMC2 tuning issue ( direction reverses intermittently)

2009-07-06 Thread Gene Heskett
On Sunday 05 July 2009, Jeffrey Pease wrote: Thanks for everyone's responses. I get a digest version of the mail list responses, so I'll go ahead and reply to everybody's at one time. Robert: I haven't spent much time messing with halscope, but I'm not sure how to best use it here given the

Re: [Emc-users] Weird EMC2 tuning issue ( direction reverses intermittently)

2009-07-06 Thread Luc Claeys
Hi, I don't see value that specifically affects the direction valid time, but I definitely could be missing something... Someone will probably chime in here. See parameters stepgen.N.dirsetup and stepgen.N.dirhold in http://linuxcnc.org/docs/2.3/html/man/man9/stepgen.9.html You can set

Re: [Emc-users] Weird EMC2 tuning issue ( direction reverses intermittently)

2009-07-06 Thread Gene Heskett
On Tuesday 07 July 2009, Luc Claeys wrote: Hi, I don't see value that specifically affects the direction valid time, but I definitely could be missing something... Someone will probably chime in here. See parameters stepgen.N.dirsetup and stepgen.N.dirhold in

Re: [Emc-users] Weird EMC2 tuning issue ( direction reverses intermittently)

2009-07-06 Thread Luc Claeys
Hi, Gene Heskett wrote: On Tuesday 07 July 2009, Luc Claeys wrote: I don't see value that specifically affects the direction valid time, but I definitely could be missing something... Someone will probably chime in here. See parameters stepgen.N.dirsetup and stepgen.N.dirhold in

[Emc-users] Weird EMC2 tuning issue (direction reverses intermittently)

2009-07-05 Thread Jeffrey Pease
I am working on tuning my homebuilt HobbyCNC machine with EMC 2.3. I am using the HobbyCNC EZ driver board to interface with my PC. I have things working, but am working on tweaking the ini settings to get as high of feedrate as I can reliably. One mysterious issue I've seen that I'm trying

Re: [Emc-users] Weird EMC2 tuning issue (direction reverses intermittently)

2009-07-05 Thread robert
Jeffrey Pease wrote: a movement command to the milling machine will make an axis move the correct distance in the INCORRECT direction. This can happen either when running a gcode program or manually jogging the axis in a direction. If it occurs during a jog, usually all I have to do

Re: [Emc-users] Weird EMC2 tuning issue (direction reverses intermittently)

2009-07-05 Thread Terry
Jeffrey, Are you sure on that 40 inches per sec? That means you rapid at 2400 inches per min(which is the way people talk about rapids) That would be pretty incredible for stepper motors. Pretty fast steppers run about 300 inches per min. The step config wizard uses inches per sec. Terry On

Re: [Emc-users] Weird EMC2 tuning issue (direction reverses intermittently)

2009-07-05 Thread Gene Heskett
On Sunday 05 July 2009, Jeffrey Pease wrote: I am working on tuning my homebuilt HobbyCNC machine with EMC 2.3. I am using the HobbyCNC EZ driver board to interface with my PC. I have things working, but am working on tweaking the ini settings to get as high of feedrate as I can reliably. One

Re: [Emc-users] Weird EMC2 tuning issue (direction reverses intermittently)

2009-07-05 Thread James Reed
...@peasej.com To: emc-users@lists.sourceforge.net Date: Sun, 5 Jul 2009 12:25:16 -0700 Subject: [Emc-users] Weird EMC2 tuning issue (direction reverses intermittently) I am working on tuning my homebuilt HobbyCNC machine with EMC 2.3. I am using the HobbyCNC EZ driver board to interface

Re: [Emc-users] Weird EMC2 tuning issue (direction reverses intermittently)

2009-07-05 Thread a
, and the scope is the tool for outside the computer. From: jpe...@peasej.com To: emc-users@lists.sourceforge.net Date: Sun, 5 Jul 2009 12:25:16 -0700 Subject: [Emc-users] Weird EMC2 tuning issue (direction reverses intermittently) I am working on tuning my homebuilt HobbyCNC machine with EMC