Hi Tom, I think it's an unnecessary loss of precision to use ints for the SCALE.
> the general public (non-emc?) would think ints when thinking counts per > unit of measure I use numbers like "21747792.6624" on some commercial robot controls I work on, using ints there would probably hurt especially with the kinematics calculations. Since it already does floats, I see no reason to "dumb" it down ;) Regards, Alex ----- Original Message ----- From: "tomp" <[EMAIL PROTECTED]> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> Sent: Thursday, December 04, 2008 11:06 AM Subject: Re: [Emc-users] How can I calculate the INPUT_SCALE value? > john, > > i wasnt aware that emc used floats ther > it is unusual in cnc to do so, but thats an observation > > the 'nice number' refers to the numerator and denomimator > which are outside if emc > which are inside the driver > > unless these 2 are nice numbers ( ints divisible by 4 ) > then the home pulse delivered to control is longer than the real home > pulse > this can lead to trouble in homes that do not coincide always. > when both are ints divisble by 4, then the home pulse is same size as > mfctr intended > > floating point has to do with emc > nice numbers have to do with driver > > integer counts per user unit of measure might be an advantage to emc > because most cnc manufacturers use integers there (Fanuc Heidenhain ) > and there are some that use floats (PMAC EMC ) > > the general public (non-emc?) would think ints when thinking counts per > unit of measure > > fwiw > tomp > ------------------------------------------------------------------------- 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
