Re: [CAD_CAM_EDM_DRO] emc with camtronics more help please

bgroover1 wrote:

> Sorry to keep asking question but emc is killing me. I'm using
> stepermod and I can't seem to get emc to move the same amount every
> move. Computer is a p150 pro. I get it set up. I know my x axis
> needs 4000 steps to go an inch. I run emc. I move .001 it
> moves .001. I do it x times it works x times. I do it once more and
> it may not move or it moves .003 It may move .1 three time in a row
> with no error and on the forth time drops anywhere between .001
> and .01
>
> I've tried tuning the ini file but it doesn't seem to help. Can
> anyone tell me what variable in which section I should be looking
> at. I've tuned emc.ini serveral times with all the docs I can find.
>
> Should I use feqmod instead? Will it work with the camtroncs 5amp
> controllers?

I can't tell for sure what the problem is, or even if there is one.
Note that, internally, EMC uses metric units. So, there is a tiny
bit of NON-cumulative error in the placement of extremely small
moves. Also, you can't really expect any machine less than a
DeVlieg jig bore to actually make repeatable moves in this range.

Are you talking about displayed position on the screen? then it
most certainly is the conversion to mm and back to inches.

As for freqmod, you need a computer faster than a P150 for that
version.

Jon