Re: [Emc-developers] contouring performance

2012-01-07 Thread Anders Wallin
my recollection from a few years back is that the rigorous exact-stop mode is G61.1 this stops at the end of *every* move. G61 improves slightly on this by blending moves where the end-tangent of the previous move matches the start-tangent of the next move. So with G61 there would be no stop

Re: [Emc-developers] G74.1/G84.1 rigid tapping cycles

2012-01-07 Thread John Thornton
Michael, I've tried creating a test branch off of master and off of 2.5 then applying the patch but I get an error when I run git am. error: patch failed: src/emc/rs274ngc/interp_cycles.cc:347 I think Rob also had a problem but he didn't spell it out but mentioned git so I suspect it might be

Re: [Emc-developers] SmoothStepper support?

2012-01-07 Thread andy pugh
On 7 January 2012 06:06, Dave e...@dc9.tzo.com wrote: I mentioned the 7i43 since it also has a USB port but cannot be used. It has been made to work on USB with EMC2. http://youtu.be/BraEMAu5UkY But I am not clear on what changes were made. -- atp The idea that there is no such thing as

Re: [Emc-developers] contouring performance

2012-01-07 Thread Viesturs Lācis
2012/1/7 Jon Elson el...@pico-systems.com: There are two options, I suppose. Provide a different mode, where this restriction is ignored, and the CAM is trusted to not ever exceed the machine acceleration limits. Or, develop an N-block look-ahead, and I know that can be QUITE complex. Could

Re: [Emc-developers] contouring performance

2012-01-07 Thread John Thornton
I use G64 Pnn on my plasma with thousands of tiny lines and arcs and I can't tell that it is slowing down much if any and that is at plasma cutting speeds of up to 300IPM. Without G64Pnn the whole plasma table shakes as the speed ramps up and down... even contouring you should be roughing out

Re: [Emc-developers] contouring performance

2012-01-07 Thread Jeff Epler
On Thu, Jan 05, 2012 at 10:37:35PM -0600, Jon Elson wrote: I just had somebody ask me about contouring performance of EMC2. I spotted something in the user manual I had never seen before, section 3.1.4, that says that no move can ever go fast enough that the machine cannot stop at the end of

Re: [Emc-developers] contouring performance

2012-01-07 Thread Jon Elson
Jeff Epler wrote: On Thu, Jan 05, 2012 at 10:37:35PM -0600, Jon Elson wrote: I just had somebody ask me about contouring performance of EMC2. I spotted something in the user manual I had never seen before, section 3.1.4, that says that no move can ever go fast enough that the machine