Chris Radek wrote: > On Wed, Nov 12, 2008 at 05:43:19AM +0100, Maximilian wrote: > > >> When i close the axis gui with the big X in the upper right corner of >> the window my amps stay tuned on and start drifting because there is no >> pid controller providing any commanded position. >> [...] >> Hardware is a stg2 card. >> > > Does the STG have a watchdog? If not, you really need an external > charge pump in your estop chain. There's no other safe way. > The STG has a sort of watchdog function, it toggles an output at 20 Hz or something when it is constantly getting updates from the computer. I did build a circuit to shutdown the servo amps and aux functions, see the 2nd schematic from the bottom at http://pico-systems.com/EMC.html
I don't know why this is still on my web site, but it did work for the STG. Jon ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
