On Sat, 2008-10-18 at 15:29 -0700, haw-jyh liaw wrote: > Hi all, > > Short version: > ========== > > does anyone know how to change EMC 2.2.6 to generate a longer "step" > pulse on parallel port? > I have tried changing both step time and step space, but they don't > affect the pulse width at all. > > Long version: > ==========
I had similar problems getting EMC2 to work with a CNC4PC C11 multifunction card which has optoisolated signals. The step pulse time produced by a stepconf-generated config is determined by the reset interval on the parallel port - this is defined by a line like this in the hal file: setp parport.0.reset-time 5000 In addition, each of the step pulse outputs is set up to reset automatically by a line like this in the hal file: setp parport.0.pin-02-out-reset 1 (The explanation of how the reset mechanism works and why it exists is at http://axis.unpy.net/01188134101) I found that increasing the reset time beyond a certain limit had no effect. My solution was simply to comment out all the above lines from the hal file. ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
