Re: [Emc-users] MPG ilowpass vs limit2/3

2014-01-28 Thread Jon Elson
On 01/28/2014 05:01 AM, andy pugh wrote: > I haven't used it myself, so I am not sure how the > on-screen display of mm-per-click and the actual > mm-per-click are sorted out. Using the ilowpass, you can actually hear the last few integer steps come out after you stop moving the MPG. The way I

Re: [Emc-users] MPG ilowpass vs limit2/3

2014-01-28 Thread Stephen Dubovsky
Thank guys. I completely missed the integer in/out part. I had sort of figured out it was trying to increase apparent resoution from what Peter and Jon said and now that makes a lot of sense why. We'll give it a try. Though, Im now curious as to how a filter will play along w/ the velocity mode

Re: [Emc-users] MPG ilowpass vs limit2/3

2014-01-28 Thread andy pugh
On 28 January 2014 02:09, Stephen Dubovsky wrote: > Any reason to use them over ilowpass? No, ilowpass is specifically for the MPG use-case. The "counts" inputs for wheel jogging are integer. The output of an MPG is an integer. If the jog speed is set to 1mm per click, then no matter what you

Re: [Emc-users] MPG ilowpass vs limit2/3

2014-01-27 Thread Jon Elson
On 01/27/2014 08:09 PM, Stephen Dubovsky wrote: > We have MPG 'banging' on two machines that are tuned fast and I just found > the 'ilowpass' example fix online: > http://linuxcnc.org/docs/html/examples/mpg.html > > Looks to be a FIR filter. I had actually found the 'limit2' and 'limit3' > functio

Re: [Emc-users] MPG ilowpass vs limit2/3

2014-01-27 Thread Peter C. Wallace
On Mon, 27 Jan 2014, Stephen Dubovsky wrote: > Date: Mon, 27 Jan 2014 21:09:59 -0500 > From: Stephen Dubovsky > Reply-To: "Enhanced Machine Controller (EMC)" > > To: "Enhanced Machine Controller (EMC)" > Subject: [Emc-users] MPG ilowpass vs limi

[Emc-users] MPG ilowpass vs limit2/3

2014-01-27 Thread Stephen Dubovsky
We have MPG 'banging' on two machines that are tuned fast and I just found the 'ilowpass' example fix online: http://linuxcnc.org/docs/html/examples/mpg.html Looks to be a FIR filter. I had actually found the 'limit2' and 'limit3' functions first to use as rate limiters when searching. There is