Guys, I'm getting lost here:
- attached the old 3 axis xylotex: same problem - hooked up the scope to watch the step signal: step high approx 3 us. Should be ok as xylotex says 1000 ns minimal. 5 volts. - at approx 1000 Hz pulses seem ok. a little twitchy on the scope screen. - attached older pacsci motor: same problem. No torque at all. - voltages to the xylotex board ok: 29V and board gives proper 5 volts Don't know what next to do. Any hints more than welcome. Thx for listening, Geert Geert De Pecker wrote: > Jon and others, > > Thanks for the replies. > > The configs were in the ~/emc2/configs folder (home directory). So I > guess this is not the problem. > > Playing around with the steplen and stepspace parameters does make the > pulses nicer, but steppers still behaving erratic. Although I'm quite > convinced I had a lot nicer output on the scope earlier. > > I'll try first with an older xylotex board. Just to make sure the > problem isn't there. > > Thanks, > > Geert > > Jon Elson wrote: >> Geert De Pecker wrote: >>> Hi All, >>> >>> Due to some health problems, I didn't power up my emc box the last 2 >>> months and when I did last week, ubuntu wanted to install an update >>> which I accepted. Maybe stupid of me ... >>> >>> When I started emc, the X didn't respond anymore and the Y and Z behaved >>> very erratically. Movement of these two is very unsmooth and it seems >>> the motor receives >>> >>> My config is a cnc4pc breakout board and a recent xylotex 4 axis board. >>> >>> I checked the pulses with the scope and they seem to be very short. >>> >>> As I don't recall how it was before, I can't compare. >>> >>> Basically, my question is if anybody knows that there has been changes >>> in either ubuntu or in emc during the last 4 to 5 months that could >>> explain this? >> My guess is that you edited the default setup files for your >> local configuration, instead of making a copy in your user >> directory. When the EMC updates were installed, it loaded a >> new default config file on top of your edited one. >> >> If that isn't the problem, then there may have been some change >> in the handling of ini file parameters that has made one of your >> settings no longer make a setting. You mention the pulse width >> being very short, so you might check for that. I took a quick >> look at the configs/stepper directory, and didn't see ANYTHING >> about pulse width in stepper_inch.ini or xylotex_pinout.hal >> Maybe these files allow EMC to take the default, there must be >> some way to set the pulse width when using motmod. >> >> Jon >> >> ------------------------------------------------------------------------- >> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference >> Register now and save $200. Hurry, offer ends at 11:59 p.m., >> Monday, April 7! Use priority code J8TLD2. >> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > > ------------------------------------------------------------------------- > This SF.net email is sponsored by the 2008 JavaOne(SM) Conference > Register now and save $200. Hurry, offer ends at 11:59 p.m., > Monday, April 7! Use priority code J8TLD2. > http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Register now and save $200. Hurry, offer ends at 11:59 p.m., Monday, April 7! Use priority code J8TLD2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
