Yes, rewind literally meant rewind the tape! They could have attached other things to the M30 macro to change pallets.
Dave On 4/7/2012 2:28 AM, Kirk Wallace wrote: > On Sat, 2012-04-07 at 01:07 -0500, Stuart Stevenson wrote: > >> Gentlemen, >> The original difference between M2 and M30 was as follows: >> M2 was a program stop >> M30 was a program stop with a rewind. >> For the individuals who never had the pleasure of running a 'tape' >> machine a little explanation is in order. >> A paper/Mylar tape reader would read the tape every time a part was >> machined. The decision was made to leave the ends of the tape alone or >> to connect the ends of the tape and create an endless tape. If you >> left the paper tape ends unconnected you would then need to rewind the >> tape to the front of the tape (program start position), hence an M30 >> would be needed to tell the tape reader to run in reverse until it >> found the code indicating the program start position. >> When the paper tape ends were connected an M2 was used as a rewind >> was not needed. >> > Are you sure? I recall using M30 to get the workpiece pallet to come out > at the end of a run, so the part could be removed. > > http://www.youtube.com/watch?v=fiABdNc-Nqo > > ------------------------------------------------------------------------------ For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
