Re: Problem with resolution. 72 ????

[rehenry <rehenry-at-up.net>]

Antonio

I had to increase the FERROR and MIN_FERROR to make it run here.  It 
seems that this is computed or at least tested just a bit differently in 
the plus and minus directions.  I have noticed this problem with other 
setups.  I changed 

> DEFAULT_ACCELERATION = 10.0
> MAX_ACCELERATION = 10.0

and 

> FERROR = 10.000
> MIN_FERROR = 0.10

The system works even at your 360 rapid although it would seem to me that 
you would need to multiply the default settings by 25.4 to set them the 
same in metric as I use in inch.  I may be missing something in my 
understanding of the units of ferror?

Nice job.  Let us know how it works out for you.

Ray


On Friday 15 March 2002 05:11 am, antonio ximenez wrote:

> Somebody Know, if input_scale parameter is limited at
> a number >= 3 digits ?
> OK, I am going to try explain the reason for the above quetsion.
>
> I am building a plasma cutter with the next dimensions:
> x= 2000mm  lead screw step 5mm ( 5mm per Turn )
> y= 1000mm  lead screw step 5mm ( 5mm per Turn )
> z= 100mm   lead screw step 3mm ( 5mm per Turn )
>
> Motors are 2º per step, so in half step mode I get 360º= 1 revolution.
> The input_scale for axis must be
> x= 360/5mm = 72
> y= 360/5mm = 72
> z= 360/3mm = 120
>
> If you tried resolutions < 100 you can jog x and y axis in clockwise,
> anticlockwise dont work ever.
>
> Z axis work fine, It has a resolution > 100.
>
> This is my ini file, but if you have a ini file working and change
> resolution < 100 you understand my problem.
>
> Suggestion about velocity and accel. parameters have been tried without
> results.
> Resolution is the problem, I think.
> Some help is welcome.
>
> Thanks in advance

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