On Sat Jun 20 18:21 , Steve Blackmore <st...@pilotltd.net> sent: >It's a major drawback that one. Other controllers I'm aware of allow it.
I have had this ability on machines and only used it once or twice I wouldnt call that a major drawback. Well thought out programs shouldnt need to be stopped. >As it stands EMC is designed for those who use tooltables and tool >holders. 90% of the world uses tooltables >consequence of that severe limitation is, it doesn't cater for easy tool >wear adjustment or replacement. Tool tables will allow you to adjust for wear. Terry >On Sat, 20 Jun 2009 23:07:58 +0200, you wrote: > >>There is, as far as I know, no way to use MDI during a program. If it >>was possible then how would EMC know how to move back to the last >>programmed position/ > >It's a major drawback that one. Other controllers I'm aware of allow it. >In those it's possible to feedhold then jog, or pause, then jog and >re-zero a tool, jog away, then just press cycle start and program will >continue. Some do a pre - "safe move", some simply rely on the operator >having the tool in a safe position so it won't hit a fixture, clamp etc >on the way back. > >The only provisos on that are canned cycles and subroutines. Feedhold is >disabled in threading or tapping cycles, and results can be interesting >during sub routines ( a good reason not to use sub's just to appear >clever) > >They track the machine co-ords and generally display whatever work >co-ords are in use. They know what line they are on, (couldn't run code >otherwise :) jog, mdi or running a program are all simply movement >commands tracked by the controller and are interchangeable. > >They seem to know where they are and how to move back to where they >were. > >As it stands EMC is designed for those who use tooltables and tool >holders. > >Difficult if your machine uses collets and the tool position is not >repeatable or you can't pre-program it in the tooltable. Only simple way >around that is a separate program per tool. Not convenient, and a >consequence of that severe limitation is, it doesn't cater for easy tool >wear adjustment or replacement. > >Steve Blackmore >-- > >------------------------------------------------------------------------------ >Are you an open source citizen? Join us for the Open Source Bridge conference! >Portland, OR, June 17-19. Two days of sessions, one day of unconference: $250. >Need another reason to go? 24-hour hacker lounge. Register today! >http://ad.doubleclick.net/clk;215844324;13503038;v\?http://opensourcebridge.org >_______________________________________________ >Emc-users mailing list >Emc-users@lists.sourceforge.net >https://lists.sourceforge.net/lists/listinfo/emc-users ---- Msg sent via CableONE.net MyMail - http://www.cableone.net ------------------------------------------------------------------------------ Are you an open source citizen? Join us for the Open Source Bridge conference! Portland, OR, June 17-19. Two days of sessions, one day of unconference: $250. Need another reason to go? 24-hour hacker lounge. Register today! http://ad.doubleclick.net/clk;215844324;13503038;v?http://opensourcebridge.org _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
