Re: PPMC developments

[Rick Price <rickp-at-mitra.com>]

I had a problem like that because by default the ini files seem to
choose to use a secondary parallel port. If you change the ini file to
point at the lpt1: you might fix your problem.


Jon Elson writes:
 > 
 > Hello, all,
 > 
 > I worked a bit this weekend on getting a computer set up to test
 > the parallel port motion control with EMC.  I got a computer
 > that had been running stock Red Hat Linux 5.2 and moved a
 > copy of my RTLinux kernel over, and after many false starts,
 > I got it running, with the kernel modules, rt fifos, and everything
 > in place and working.  Then I had to get EMC to compile, so
 > it took some fishing around to get all the include files and
 > libraries in place.
 > 
 > So, now EMC comes up on the system, but I can't get out of
 > estop (sound familiar?)  I have a .ini file that works perfectly
 > on the real EMC system with the Servo-to-Go card in it.
 > Now, as I understand it, the sensing of estop is through the
 > parallel port, not the STG card.  So, it seems like it should
 > come out of estop without the STG card.  But, maybe there
 > is additional logic in there that senses the STG card is missing,
 > and forces it to stay e-stopped.
 > 
 > So, I tried some of the default versions, like emc.run but had
 > the same problem.  I tried various combinations of estop_sense_polarity
 > and the parallel port addresses.  Does anyone have a .ini file
 > that will allow EMC to work in RT mode with only one
 > parallel port, or have any suggestions on how to get it going?
 > 
 > Once I get past there, I then need to substitute my encoder and
 > DAC routines for the STG versions and try to get it to run!
 > 
 > Jon
 > 
 > 
 >