Hook up the PC and using lpt or similar monitor, you should be able to toggle the state of the home switches, estop and monitor them on the pc. With jumper JP4 IN , you should be able to set PIN 1 and control LED7.
The enable, no biggy. If you look at the BOB, R10, R8, and R9 are symbolized there for that exact purpose. Where those three components install, there is a small jumper land effectively shorting those components out. (I just noticed, that needs to documented, as I never intended those to be installed, was just an easy way in eagle to provide the physical hooks). One side goes to the db25, the other to each respective pin for enable for each axis. Slit that jumper for each of r8, r9, and r10 and you have disconnected the enable line form the bd25. You can use the pad that connects the enable line to either wire it high or low depending on which state you want or you can wire them to either pad j or l so that estop controls enable. I'm at a disadvantage here I know nothing of linuxcnc. I would suggest setuing up the software.
Phil
p.s. If you or anybody out there has a word processor compatable with Microsoft Word, I'd upload the document so the info here could be added.  |