I have a solution. Part of the problem with the LinuxCNC system was the behaviour of the PMDX-126 Break Out Board with respect to the Charge Pump Signal.
I've posted the results to: https://www.pmdx.com/PMDX-Forums/index.php?topic=521.0 The stepconf generated hal file is incorrect when using the charge pump signal assigned to PIN 17. It didn't help that the PMDX-126 also had an odd behaviour requiring removal of the charge pump in order to allow the ESTOP switch input to be reflected on the parallel port connection. I don't know if an update should be posted here too since this is specific to the PMDX-126 https://github.com/LinuxCNC/linuxcnc/issues/315 John > -----Original Message----- > From: andy pugh [mailto:bodge...@gmail.com] > Sent: May-22-18 5:06 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] No Charge Pump signal > > On 22 May 2018 at 07:29, John Dammeyer <jo...@autoartisans.com> wrote: > > > If I understand the hal file correctly the charge pump code is loaded, the > > estop_out pin and charge-pump.enable are dependent on the user- > enable-out > > which is controlled by the ENABLE button on the top left part of the > screen. > > If you look at charge-pump.enable with Halmeter does it change state? > You could also Halscope parport pin 17, that should indicate if HAL > _thinks_ it is twiddling the pin. > > It is possible that the scope might not see anything without pull-up > or pull-down on the pin. P-port pins are a bit funny that way I seem > to recall (I haven't used one for ages) > > -- > atp > "A motorcycle is a bicycle with a pandemonium attachment and is > designed for the especial use of mechanical geniuses, daredevils and > lunatics." > � George Fitch, Atlanta Constitution Newspaper, 1916 > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
