Re: Working ... but not quite

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

List

Let's get everything we know about the ini file to Robin.  Go to his site 
and see what needs to be filled in or expanded.


Robin

Thanks for the kind offer to help with documentation.  Yes I think that 
it will be useful.  I'm sure that the faster the pc the faster it can 
spit out pulses but I don't think that there is a 1 to 1 correlation.  
I've been content with the thought that the relationship was ordinal.  
Perhaps we should do some testing.

Ray


On Monday 16 September 2002 06:28 am, you wrote:
> On Monday 16 September 2002 01:40, Ray Henry wrote:
> > Robin
> >
> > You will not get the same pulse rate from Linux and from Dos using
> > the same box.  Four KHz sounds good for a 150 machine.  Some report
> > that they can get about 15 KHz from 450+ machines with steppermod. 
> > You will get somewhat less with freqmod.
>
> oh .. OK  .. better upgrade the box then .. base machines here are
> 1.7ghz anyway now, so assuming it scales linearly then it should be OK.
>
> > It's on the "to-do" list.
>
> OK .. well .. I'll make a start on it for my own benefit, from what I
> can work out. I've parsed the ini file and will volunteer to collate
> any information and format it into html and ps/pdf .. I'll work out
> what I can from the source .. if a couple of people who *do* know whats
> what could have a quick look at http://www.quacky.co.uk/~robin/ini.txt
> and fill in a few gaps (I'll merge any info thats submitted and keep it
> updated) it should be possible to document most of it fairly quickly.
>
> I'd like to document a) 'standard' value from emc.ini, b) the range of
> acceptable values and c) some notes on the effects and constraints etc.
> (ie what it does)
>
> Should it ever become nearly complete it can be merged back into CVS if
> you think it useful.
>
> > Ray
> >
> > On Sunday 15 September 2002 06:56 pm, Robin wrote:
> > > Right ... more questions ..
> > >
> > > I'm getting 'axis follow' errors when I make rapid traverses (well
> > > .. slow traverses .. it quits a long time before it gets anywhere
> > > near 'rapid') .. what sort of maximum pulse rate should I be able
> > > to reliably get out of steppermod.o and a Pentium 150 ... I need
> > > around 20 to 30khz to get best performance out of the motors ...
> > > I'm not getting much more than 4khz at the moment ... any
> > > suggestions?
> > >
> > >
> > > and ... is there a clear and concise explanation of the various
> > > terms in the ini file ... ?? I'm struggling to identify all the
> > > lines .. the handbook identifies some of the lines but some are
> > > undocumented .. am I missing something and theres a big lump of
> > > documentation apart from the emc handbook somewhere ... ?? or is
> > > this still on the to-do list .. ??
> > >
> > > many thanks.