Hi Doug. You bet you can do this. (working from memory here rather than testing on a real setup so there may be a few errors)
There are pins in iocontrol that are intended for it. They are not named estop any more because of some mental gymnastics/discussions that I hope we don't want to get into. iocontrol.0.user-enable-out This pin is half the picture because you'll need to report back to emc that the state of estop has changed. That pin, iocontrol.0.emc-enable-in needs to follow the state of the first if you do not have external estop state sensing. You'll see estop loopback lines in many of the sample configs. One such is about line 22 in standard_pinout.hal. You'll find this file in the stepper config directory. It reads like this in 2.1.5 # create a signal for the estop loopback linkpp iocontrol.0.user-enable-out iocontrol.0.emc-enable-in HAL only allows one signal to write to any pin so rather than the linkpp command, I'd comment out that line and make a new signal like this. newsig my-estop bit Now connect that signal to the user-enable-out and in linkps iocontrol.0.user-enable-out my-estop linksp my-estop iocontrol.0.user-enable-in If you look at the state of the pins using either halcmd or halshow you'll see that user enable signals go true when the gui asserts estop off. That means that all you need to do is connect the signal you made to the parport pin. linksp my-estop parport.0.pin-08-out Now the signal my-estop writes to both emc and parport. A similar pattern can be setup with halui but let's leave that one for a later time. Rayh On Mon, 2007-06-11 at 22:29 -0700, Doug Metzler wrote: > I'm a bit of a newb at this so sorry if the answer is obvious, but is there > a way to attach UI actions to parallel port pin states? In my case I need > to have pin8 go high when I release the eStop button in Axis. > > Thanks, > > DougM > > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
