Re: [Emc-users] Maximal pulse rate
Ing. Milan Ptáček wrote: > Dears, > > What maximaly pulse rate fraquency is possible reach with using EMC2 through > paralel port. > For my application is necessary approx. 200kHz. I using the stepper motors > with 10.000 microsteps > for one revolution. > > In EMC documetation is presented around 20.000 Hz? You can easily do 300,000 steps/sec per axis, simultaneously, using such hardware support as the Pico Systems Universal Stepper Controller, http://jelinux.pico-systems.com/univstep.html Jon - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. 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] Parallel Port Problems
Amen on the coffee. Still on first cup. Did you try the .hal equivalent of explicitly configuring the parport like: loadrt hal_parport cfg="0x0378 out"? And as Rayh said, you might need resistors. Is it a "standard" desktop PC with on-board parport? Keep us posted, Emory On Dec 20, 2007 7:54 AM, Ray Henry <[EMAIL PROTECTED]> wrote: > > These suggestions may be irrelevant, John. I've not had a full dose of > coffee. > > Is the bios for this parport set to spp or out? > Have you tried inverting these pins using HAL's parport parameters? > > I seem to remember that a couple of the pins you list were considered > inverted in hardware but that diagram seems to have gone away. From the > current HAL User Manual it sounds like HAL takes account of pins that > were inverted in hardware. > > Also long ago we had to use external pull-up or pull-down resistors to > create a well behaved parport. > > Rayh > > > > > On Thu, 2007-12-20 at 06:41 -0600, John Thornton wrote: > > I have a CNC4PC parallel port breakout board connected to my parallel port > > via a > > parallel port cable. When testing all the outputs in EMC2 via the HAL > > command > > setp parport.0.pin-nn-out (all unlinked first) pins 1, 8, 9, 14 and 16 do > > not come on. > > > > Does this look like some kind of pattern or something? Any ideas? > > > > All the other pins in and out work as expected. > > > > Thanks > > John > > > - > SF.Net email is sponsored by: > Check out the new SourceForge.net Marketplace. > It's the best place to buy or sell services > for just about anything Open Source. > http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Emory Smith [EMAIL PROTECTED] http://defoliants.googlepages.com - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. 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] Parallel Port Problems
These suggestions may be irrelevant, John. I've not had a full dose of coffee. Is the bios for this parport set to spp or out? Have you tried inverting these pins using HAL's parport parameters? I seem to remember that a couple of the pins you list were considered inverted in hardware but that diagram seems to have gone away. From the current HAL User Manual it sounds like HAL takes account of pins that were inverted in hardware. Also long ago we had to use external pull-up or pull-down resistors to create a well behaved parport. Rayh On Thu, 2007-12-20 at 06:41 -0600, John Thornton wrote: > I have a CNC4PC parallel port breakout board connected to my parallel port > via a > parallel port cable. When testing all the outputs in EMC2 via the HAL command > setp parport.0.pin-nn-out (all unlinked first) pins 1, 8, 9, 14 and 16 do not > come on. > > Does this look like some kind of pattern or something? Any ideas? > > All the other pins in and out work as expected. > > Thanks > John - SF.Net email is sponsored by: Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Parallel Port Problems
I have a CNC4PC parallel port breakout board connected to my parallel port via a parallel port cable. When testing all the outputs in EMC2 via the HAL command setp parport.0.pin-nn-out (all unlinked first) pins 1, 8, 9, 14 and 16 do not come on. Does this look like some kind of pattern or something? Any ideas? All the other pins in and out work as expected. Thanks John - SF.Net email is sponsored by: Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
