Chris, >> Thanks for the info. Can I use ClassicLadder to drive a stepper axis? >> Do I have to connect the stepgen and count the pulses I send to it? >> or can I just instruct it to do a GCode sequence? > > Sounds like you will have to use stepgen or something like it to > generate pulses. If there is no feedback do you just mash it back > against the stop and let the stepper stall for a while, then assume > it's in place?
Yes :o( That is how it was designed! (Boxford 160TCL) > Using an axis position is possible but because (I assume) it loses > position when you change tools due to the above, the numbers won't > represent anything "real". Also you would have to program A moves > instead of M6. Yes it loses steps. >> Does EMC automagically remember the value between sessions or do I use >> the >> external file for it to save the axis positions? (I can't remember the >> name >> of the file off the top of my head) > > No it doesn't. You would have to either start up with the turret in > a known position, or add some kind of sensor to "home" the turret. > > Your turret as-is seems like not a very good match for EMC's way of > doing tool changes where they are separate from motion axes. But > I bet you can make it work. I was hoping not to have to modify it at all. There isn't a tidy way to add a home switch without alot of work. Presumably there is a way to make EMC remember, even if I have to write a HAL command which responds to the iocontrol.0.tool-prepared signal and write the current tool number to a text file. I could then respond to the tool-prepare command and ignore the current tool number that EMC tells me and read it from the file to calculate the move required. Thanks Simon ------------------------------------------------------------------------- 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