On 04/03/2016 09:34 AM, andy pugh wrote: > On 3 April 2016 at 13:48, Mark <[email protected]> wrote: > >> Using file A for example, with the coordinates only given with 0.1" >> precision, what exactly does the controller do? Does it actually work >> to 0.1" precision or does it work to moreprecision, vis-a-vis when >> making moves? > It will move from X x.x0000000000000 to X x.x0000000000000 > > The internal representation is double-precision floating point mm. > Double-precision has at least 15 digits of decimal precision. > https://en.wikipedia.org/wiki/Double-precision_floating-point_format > > If someone was to make a micro-machining system that needed better > than femtometer precision they would have to "lie" to the system and > set up the feedback and scaling so that a G-code command of X10 moved > 10nanometers (or whatever) > > Okay, now we're getting somewhere. Assuming the theoretically perfect machine, a commanded move in a straight line (keeping it simplified)would stop within
x.x0000000000000" of it's commanded position, correct? Mark ------------------------------------------------------------------------------ Transform Data into Opportunity. Accelerate data analysis in your applications with Intel Data Analytics Acceleration Library. Click to learn more. http://pubads.g.doubleclick.net/gampad/clk?id=278785471&iu=/4140 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
