Re: [Emc-users] Rotary homing.
On Tue, 2012-01-24 at 18:04 -0500, gene heskett wrote: if I can insert those few lines of code after the M6 T# command. If you add: [EMCIO] TOOL_CHANGE_AT_G30 = 1 Then M6 will move to the G30 position, which you've cleverly set right above the probe switch. Admittedly, you must then call the probe subroutine, but a little sed-fu [grin] should do the trick if pcb2gcode doesn't have an option buried in there to wrap some user code around the tool change. The sourceforge pcb2gcode page has a bullet item: output can be adjusted for automated height probing, see http://www.cnczone.com/forums/showthread.php?t=82628 That discussion points to: http://www.cnczone.com/forums/pcb_milling/82628-cheap_simple_height-probing.html Which seems to be a generalized planar-surface probe process that's likely too complex. All you must do is insert a G38.2 probe-and-set subroutine, because you've already solved the PCB flatness and alignment problems. Some sed-fu should do the trick. I vaguely recall reading that stuff while building my hand-hewn G-Code routines. Mercifully, those didn't have the problem of integrating with anything else in the known universe... -- Ed http://softsolder.com -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
On Wednesday, January 25, 2012 04:49:03 PM Ed Nisley did opine: On Tue, 2012-01-24 at 18:04 -0500, gene heskett wrote: if I can insert those few lines of code after the M6 T# command. If you add: [EMCIO] TOOL_CHANGE_AT_G30 = 1 That is I believe, a new one to me, thanks Ed. I'm assuming that will alleviate the need to actually edit in the moves to the tool change position. OTOH, pcb-gcode outputs those moves too, so a slight change in its recipe and I am down to adding the subroutine call after the M6 T# Then M6 will move to the G30 position, which you've cleverly set right above the probe switch. Admittedly, you must then call the probe subroutine, but a little sed-fu [grin] should do the trick if pcb2gcode doesn't have an option buried in there to wrap some user code around the tool change. Which I now think can be a file to the call function, a single line to insert. This is sounding more better all the time. The sourceforge pcb2gcode page has a bullet item: output can be adjusted for automated height probing, see http://www.cnczone.com/forums/showthread.php?t=82628 That discussion points to: http://www.cnczone.com/forums/pcb_milling/82628-cheap_simple_height-prob ing.html I haven't looked yet, been out all day but I know it will be useful (Dr's office 2 or 4 craft stores, Dr says nose is ok, just not 100% healed yet), thank you for the pointers to a recipe. Which seems to be a generalized planar-surface probe process that's likely too complex. All you must do is insert a G38.2 probe-and-set subroutine, because you've already solved the PCB flatness and alignment problems. Some sed-fu should do the trick. I vaguely recall reading that stuff while building my hand-hewn G-Code routines. Mercifully, those didn't have the problem of integrating with anything else in the known universe... VBG a Chuckle :) Where I have the problem of doing much of it from scratch, first learning eagle (if it can ever be said one has truly learned it), then learning what little I know about pcb-gcode with the same comment. The gcode being virtually the only thing in this whole sequence that I haven't had to learn completely from scratch although I have spent quite a bit of time looking for fixes I needed _this_ time. Its been a fun ride even if i have hit a pothole or 3 that folks here have at least told me where to get the 'bag mix' to fix them, smoothing the ride. Thanks. Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene If you do something right once, someone will ask you to do it again. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
On 25 January 2012 22:09, gene heskett ghesk...@wdtv.com wrote: I am down to adding the subroutine call after the M6 T# Even that is potentially optional: http://www.linuxcnc.org/docview/devel/html/remap/structure.html (but probably not worth the trouble unless you are going to want to _always_ probe tool-length.) -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
On Wed, 2012-01-25 at 22:20 +, andy pugh wrote: Even that is potentially optional: Oh, *wow*... Yet Another Way to confuse myself beyond recognition. I must put the tool probe switch somewhere more-or-less fixed before I start invoking that code, but I like what it can do! -- Ed http://softsolder.com -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
On Wed, Jan 25, 2012 at 07:11:35PM -0500, Ed Nisley wrote: On Wed, 2012-01-25 at 22:20 +, andy pugh wrote: Even that is potentially optional: Oh, *wow*... Yet Another Way to confuse myself beyond recognition. I must put the tool probe switch somewhere more-or-less fixed before I start invoking that code, but I like what it can do! I'm using this remapping of T6 to include a probe on my little tabletop mill, and it's awesome. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
On Tue, 2012-01-24 at 00:12 -0500, gene heskett wrote: Its doing all moves on the .bot. files in negative X from the reference point I'm pretty sure there's a checkbox along the way that reads Mirror X axis to make that answer come out right without any further attention. The Eagle gerbv274x CAM file has a mirror option that might do exactly what you need. Probably applies only to the bottom layer, though. [*fails to install pcb2gcode due to dependency hell*] The pcb2gcode man page seems to imply (in --mirror-absolute) that backside mirroring normally takes place at the middle of the board. Perhaps you have one or more of: - the Eagle origin at the wrong spot - the backside Gerber file exported without mirroring - the --mirror-absolute option set/unset I'd expect some option twiddling would solve the problem without resort to G-Code hackage. After all, you're not the first person to mill the backside of a PCB with this tool chain! And you really need an automatic tool height probe switch... really you do! -- Ed http://softsolder.com -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
On Tuesday, January 24, 2012 05:55:14 PM Ed Nisley did opine: On Tue, 2012-01-24 at 00:12 -0500, gene heskett wrote: Its doing all moves on the .bot. files in negative X from the reference point I'm pretty sure there's a checkbox along the way that reads Mirror X axis to make that answer come out right without any further attention. The Eagle gerbv274x CAM file has a mirror option that might do exactly what you need. Probably applies only to the bottom layer, though. [*fails to install pcb2gcode due to dependency hell*] The pcb2gcode man page seems to imply (in --mirror-absolute) that backside mirroring normally takes place at the middle of the board. Perhaps you have one or more of: - the Eagle origin at the wrong spot left front corner of the board, so all dimensions on the top side are positive. Seemed sensible at the time. :) - the backside Gerber file exported without mirroring - the --mirror-absolute option set/unset I'd expect some option twiddling would solve the problem without resort to G-Code hackage. After all, you're not the first person to mill the backside of a PCB with this tool chain! Obviously not, in this case I tried a G92 X2.195 before the first move, that put the holes where they belong, and of course a G92.1 to restore it at the bottom of the file before the M2. And you really need an automatic tool height probe switch... really you do! How do you train pcb-gcode to use it? I'll put a gage with a pcb contact on top of it on the table close to the board, and from the known height of the gage, I'll just pull the quill handle down till the light comes on. Should be close enough for my girls anyway. To do it in gcode, I'll need to pull the driver box down and wire up the stuff I did have to hook up for the G38.2, which should work for that, if I can insert those few lines of code after the M6 T# command. Good idea in fact. I didn't do that when I built the new driver box. Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene I just forgot my whole philosophy of life!!! -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
gene heskett wrote: On Sunday, January 22, 2012 09:01:21 PM Jon Elson did opine: I just tried these two additions to my .ini file, then restarted emc while the machine was within about a thou of zero on all axises. But on the restart, the home flag wasn't set where it was restarted, and a click on the 'home all' button then zeroed the display in addition to setting the home * on in the selected sequence. This then throws my machine off by however much it is from zero, and this is not at all nice, forcing me to repeat the homing by electrical contact detection that I am currently using as I get setup to 'etch' a couple pcb's. That takes 5 to 10 minutes of creeping along at .015/minute feed rates for all 3 axises to arrive at where it was when I shut it down. It would be nice if there was a setting that would cause it to set the home stars, _without_ zeroing the counters, accepting that it is 'homed' wherever it is at. Well, if you want to home just ONE axis, don't do home all. I do not use the home all function, it lets me watch to avoid any collisions when homing. I don't know why your homing is so slow, I do the initial search at something like 45 IPM. Home is defined as a specific place, so machine limits can be known. (Not so important on a rotary axis.) The workpiece coordinates are some offset from that. If you move the home position, then the workpiece coords move, too. It sounds more like you want to set workpiece coords rather than homing. Jon -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
On Monday, January 23, 2012 02:22:35 PM Jon Elson did opine: gene heskett wrote: On Sunday, January 22, 2012 09:01:21 PM Jon Elson did opine: I just tried these two additions to my .ini file, then restarted emc while the machine was within about a thou of zero on all axises. But on the restart, the home flag wasn't set where it was restarted, and a click on the 'home all' button then zeroed the display in addition to setting the home * on in the selected sequence. This then throws my machine off by however much it is from zero, and this is not at all nice, forcing me to repeat the homing by electrical contact detection that I am currently using as I get setup to 'etch' a couple pcb's. That takes 5 to 10 minutes of creeping along at .015/minute feed rates for all 3 axises to arrive at where it was when I shut it down. It would be nice if there was a setting that would cause it to set the home stars, _without_ zeroing the counters, accepting that it is 'homed' wherever it is at. Well, if you want to home just ONE axis, don't do home all. I do not use the home all function, it lets me watch to avoid any collisions when homing. I don't know why your homing is so slow, I do the initial search at something like 45 IPM. Home is defined as a specific place, so machine limits can be known. (Not so important on a rotary axis.) The workpiece coordinates are some offset from that. If you move the home position, then the workpiece coords move, too. It sounds more like you want to set workpiece coords rather than homing. Jon No Jon, I want to be able to power down and restart everything without destroying an already known and set home position. I can't do that without laboriously spending maybe 2:30 per axis driving it by hand from the keyboard, to the 0. position in order to be able to set the homed flag of that axis without mucking with the established position because clicking on the home axis button destroys the home position. So I am forced to drive the machine to 0. on each axis and then click home. What I want to do is, assuming I stop emc with the machine sitting at x+3.9981, y+2.1473, z6.7500, a0., restart emc, which will then show those values in the display thanks to POSITION.txt, then be able to click the Home All button and see the homed flags come on so I can load and run code, without destroying that pretty well known 'home' position by zeroing all the counters and putting home where its sitting many inches from the home already established, I want it to accept that it has been 'homed' where ever its at in the display without screwing with the already known and set position. The only errors I would have left would be due largely from backlash, and the present POSITION.txt file not recording which side of the backlash clearance it was sitting against when emc was shut down, and the possible .0001 movement of the drivers powering back up at 00 in their microstep cycle. For what I am doing, .0001 is way better than I need in the real world, a thou would generally be fine. Workpiece coords I don't generally mess with, its the refusal of emc to run any code, or MDI functions _until_ I have destroyed the machines known position by destroying that known position as the homed flags are set. Home nor limit switches I have never installed as this machine doesn't really have room for them to be installed such that a few thou over travel would not smash them. Thanks Cheers Jon, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene I used to work in a fire hydrant factory. You couldn't park anywhere near the place. -- Steven Wright -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
On Mon, 2012-01-23 at 14:56 -0500, gene heskett wrote: by destroying that known position as the homed flags are set. Although I *do* have home switches on the Sherline, I also inserted [TRAJ] NO_FORCE_HOMING = 1 So it doesn't enforce the must-home-before-moving rule. Axis then starts up wherever it shut down, with the previous position in place, and runs just fine. It doesn't display the homed crosshairs, but that really doesn't matter. Ought to work for you... -- Ed http://softsolder.com -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
2012/1/23 Ed Nisley ed.08.nis...@pobox.com: [TRAJ] NO_FORCE_HOMING = 1 Axis then starts up wherever it shut down, with the previous position in place, and runs just fine. So are You telling that this line also tells Axis to remember joint positions on shutdown or do You have something additional for that? Viesturs -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
On Mon, 2012-01-23 at 22:34 +0200, Viesturs Lācis wrote: also tells Axis to remember joint positions on shutdown It's a simpleminded XYZA Sherline mill that wouldn't know what to do with a joint if it saw one... -- Ed http://softsolder.com -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
On Tuesday, January 24, 2012 12:02:02 AM Ed Nisley did opine: On Mon, 2012-01-23 at 14:56 -0500, gene heskett wrote: by destroying that known position as the homed flags are set. Although I *do* have home switches on the Sherline, I also inserted [TRAJ] NO_FORCE_HOMING = 1 So it doesn't enforce the must-home-before-moving rule. Axis then starts up wherever it shut down, with the previous position in place, and runs just fine. It doesn't display the homed crosshairs, but that really doesn't matter. Ought to work for you... As usual Ed, you are a lifesaver. Thank you very much. Now I am down to two problems with this teeny little pcb, one with the machine at tool change time that I have a gage under construction to alleviate that particular headache, and the I need a line or 2 of sed code to extract all the X values from the generated code for the bottoms of the pcb's and add 2.195, the length of the board to that X value in the file, thereby offsetting the cutter back to where it cut the top side. Its doing all moves on the .bot. files in negative X from the reference point so I have to effectively move the reference point from the left front corner of the board, to the right front corner by sliding all X values 2.195 to the right, which is the length of the board. Study sed pages for a while I think unless someone has a quick and not too dirty quicky posted someplace. Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene He is a man capable of turning any colour into grey. -- John LeCarre -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
On Tuesday, January 24, 2012 12:17:44 AM Viesturs Lācis did opine: 2012/1/23 Ed Nisley ed.08.nis...@pobox.com: [TRAJ] NO_FORCE_HOMING = 1 Axis then starts up wherever it shut down, with the previous position in place, and runs just fine. So are You telling that this line also tells Axis to remember joint positions on shutdown or do You have something additional for that? Viesturs No, that is this line, also in the [TRAJ] section: POSITION_FILE = position.txt That does the 'remembering'. The file format is internal to extreme precision, but I suspect that it doesn't account for which side of the backlash the machine is currently sitting at when you shut down emc. A simple + or - based on the last direction it moved, appended or comma separated from that axis's position and something in the position recovery code could process the + or - and then do a decent job of recovering a machine with say 5 thou of backlash comp in its setup, doing it to a less than a thou loss in accuracy. Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene Give all orders verbally. Never write anything down that might go into a Pearl Harbor File. -- Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
On 22 January 2012 03:51, John Stewart alex.stew...@crc.ca wrote: Does it actually have a homing switch or not? I read somewhere that the HOME_SEQUENCE=-1 told LinuxCNC (smile) not to home. Am I correct in that assumption? Yes, but that leaves the axis unhomed, whereas you want it to home without moving. As Jon has said, you need to have a positive value for the homing sequence number and a zero HOME_SEARCH_VELOCITY http://www.linuxcnc.org/docview/html/config_ini_homing.html -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
Andy, Jon; I read somewhere that the HOME_SEQUENCE=-1 told LinuxCNC (smile) not to home. Am I correct in that assumption? Yes, but that leaves the axis unhomed, whereas you want it to home without moving. As Jon has said, you need to have a positive value for the homing sequence number and a zero HOME_SEARCH_VELOCITY http://www.linuxcnc.org/docview/html/config_ini_homing.html Thank you for pointing me in the correct direction - yes, setting both the HOME_SEQUENCE number to a positive number, and the HOME_SEARCH_VELOCITY to 0.0 worked - I can now home my XYZ machine and can now get the Sherline rotary table connected. This list is great. ;-) John A. Stewart. -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
On Sunday, January 22, 2012 12:03:07 PM andy pugh did opine: On 22 January 2012 03:51, John Stewart alex.stew...@crc.ca wrote: Does it actually have a homing switch or not? I read somewhere that the HOME_SEQUENCE=-1 told LinuxCNC (smile) not to home. Am I correct in that assumption? Yes, but that leaves the axis unhomed, whereas you want it to home without moving. As Jon has said, you need to have a positive value for the homing sequence number and a zero HOME_SEARCH_VELOCITY http://www.linuxcnc.org/docview/html/config_ini_homing.html I would like to if possible have it restart in the already homed state at the POSITION.txt location, so what should I put in the individual axis sections to accomplish this? And an additional accuracy enhancer would be a 2nd field added to each axis's entry in the POSITION.txt file to tell linuxcnc which side of the backlash setting the motor was up against when that file was saved at shutdown. That would be the final link to be able to continue an interrupted job without the hassle of re-homing the whole machine. For that, a simple + or - after the value should suffice for that. Hint, hint :) That would scratch a very persistent itch for me. Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene To err is human, To purr feline. -- Robert Byrne -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
On Sunday, January 22, 2012 09:01:21 PM Jon Elson did opine: John Stewart wrote: Hi Andy; Does it actually have a homing switch or not? No, no homing switch. I read somewhere that the HOME_SEQUENCE=-1 told LinuxCNC (smile) not to home. Am I correct in that assumption? Or, is there commands in there that say don't home but you should be homed in there? If HOME_SEARCH_VEL = 0.0 in the [AXIS_n] section of the .ini file, then there will be no homing move, and wherever the machine is will be accepted as the home position. Jon I just tried these two additions to my .ini file, then restarted emc while the machine was within about a thou of zero on all axises. But on the restart, the home flag wasn't set where it was restarted, and a click on the 'home all' button then zeroed the display in addition to setting the home * on in the selected sequence. This then throws my machine off by however much it is from zero, and this is not at all nice, forcing me to repeat the homing by electrical contact detection that I am currently using as I get setup to 'etch' a couple pcb's. That takes 5 to 10 minutes of creeping along at .015/minute feed rates for all 3 axises to arrive at where it was when I shut it down. It would be nice if there was a setting that would cause it to set the home stars, _without_ zeroing the counters, accepting that it is 'homed' wherever it is at. Is this even possible Jon? Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene I used to think I was indecisive, but now I'm not so sure. -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
On 22 January 2012 01:27, John A. Stewart astew...@crc.ca wrote: Here is my hand-edited ini file - any silly/obvious mistakes here? Does it actually have a homing switch or not? -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
Hi Andy; Does it actually have a homing switch or not? No, no homing switch. I read somewhere that the HOME_SEQUENCE=-1 told LinuxCNC (smile) not to home. Am I correct in that assumption? Or, is there commands in there that say don't home but you should be homed in there? Cross fingers I'll have the Sherline stepper motor re-wired tomorrow, so I'll have the opportunity to actually test any suggestions. The Sherline table has only a stepper motor; no other switches. I'm not too concerned with the VELOCITY and associated parameters right now; that can wait until I get it wired. (dog sitting and wife working this weekend; wish me luck in getting workshop time!) Thank you; John A. Stewart. -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Rotary homing.
John Stewart wrote: Hi Andy; Does it actually have a homing switch or not? No, no homing switch. I read somewhere that the HOME_SEQUENCE=-1 told LinuxCNC (smile) not to home. Am I correct in that assumption? Or, is there commands in there that say don't home but you should be homed in there? If HOME_SEARCH_VEL = 0.0 in the [AXIS_n] section of the .ini file, then there will be no homing move, and wherever the machine is will be accepted as the home position. Jon -- Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
