On 26 April 2012 14:01, Mike Bennett <[email protected]> wrote: > I'm planning to wire my limit and estop switches to a relay that will cut > power to the spindle, disable the stepper drivers and inform Linux CNC that > an estop has occured. I want do this this as otherwise there may be no way > to stop the machine if a software error occurs.
It would be unusual to disable steppers drives upon hitting the limit switch. A better safeguard against software failure is a watchdog. > If I feed an output from this switch back into the PC is it > possible to limit the maximum jog rate while the button is held in, so I > can't accidently jog at high speed in the wrong direction? Yes, wire feed-override from a mux2 controlled by the jog-override pin. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
