On Wednesday 10 February 2021 21:58:16 John Dammeyer wrote: > > From: Gene Heskett [mailto:ghesk...@shentel.net] > > > > On Wednesday 10 February 2021 20:51:47 John Dammeyer wrote: > > > Ah! Was missing > > > setp hm2_7i92.0.gpio.023.is_output true > > > setp hm2_7i92.0.gpio.025.is_output true > > > > > > All fixed now. And setting it to DB25-17 (gpio.024) which runs a > > > relay on this little BoB I can make the relay click on and off > > > which can run an air solenoid and give me misting. John > > > > > > > From: John Dammeyer [mailto:jo...@autoartisans.com] > > > > > > > > At the moment using the HAL meter I can switch on Coolant or > > > > Mist > > > > > > > > # ---coolant signals--- > > > > net coolant-flood <= iocontrol.0.coolant-flood > > > > net coolant-flood => hm2_7i92.0.gpio.023.out > > > > net coolant-mist <= iocontrol.0.coolant-mist > > > > net coolant-mist => hm2_7i92.0.gpio.025.out > > > > Be sure and put a flywheel diode on the air valve coil John. The > > contacts of that teeny little relay will last many times longer. > > And the relay driver on the 7i92 should be checked to see if the > > coil is missing a flywheel, and add a 1N914 if there isn't one. But > > I expect Mesa has that covered though. > > You bet! I always do that. And of course it's better to have them > at the solenoid than at the relay. Snub it at the source rather than > letting it radiate off the wire.
Yup, we're on the same page. > For the servo faults I think I'll end up having to run the fault > signal into the system rather than to the PMDX-126 dedicated /Fault > input. Then logically AND that with the ENABLE out to the servos. > That will prevent the AC/DC power from being dropped out which the > PMDX does when the /Fault, E_Stop or Err signal goes active. > > I still have to investigate what will happen to coolant relays. Like > the HAL will have to AND them with ENABLE or outputs automatically > switched off Yes, I dob't recall the details but there's > 400 lines of hal I wrote long ago, on each machine that does something similar to that. > There's also the question then if > net estop-external-in => iocontrol.0.emc-enable-in > is needed? Probably yes if there is a stepper in the system that can lose home, it also gets the volatile_home treatment. > or would I be better to run the Fault Signal into the emc-enable-in. > More research is needed. If the Estop isn't triggered with a fault > (and DC/AC power isn't removed) LinuxCNC still needs to know that the > system is no longer moving. There are N! ways to do that, so trace the logic and do it the simplest way for your setup. With 4 machines each does it in a different way here. Take care & stay well John. > > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
