Re: [CAD_CAM_EDM_DRO] study, study, study

From: "Tim Goldstein" <timg@...>

>
> A newbie is the perfect person to write documentation. Once you are

familiar

> with the program you have a tendency to take too much for granted. If you
> look at www.linuxcnc.org you will see the beginnings of a manual. Jump in
> and write some more of it as you are starting to understand it. I wrote a
> scripted install for the previous version way back when I was getting
> started. Just made sense. I was doing the manual install and compile

enough

> as I was screwing things up that I figured I may as well make it semi
> automated. An experienced EMC user would be at a loss as they are likely

to

> have not done a full install in a long time. Same thing with

documentation.

> Just start collecting your questions and the answers onto a file and

polish

> up the wording.

Okay, but you should know that part of the reason
I'm so screwed right now is that I used the BDI.
Don't get me wrong, it works great~!
And is the perfect solution for someone like me who
wants to start making movements and parts in a hurry.
But I think I lost out on having to learn a lot of technique
and technical by using it. Double edged sword there.

Now the stuff below is *exactly* what should be in a manual, IMHO.
Comments interspersed.

> There are a number of motion modules. You specify which one to use in the
> [EMCMOT] section of the ini file as EMCMOT = .

So, do you just edit these ini's like in windows,
inserting which one to use, and then saving the file?

> steppermod.o : the original stepper module. Problems with pulse pacing.
> Works great for step and direction servos and steppers with a pulse buffer
> like the G210 Gecko drives.

What kind of problems?

> freqmod.o : An updated stepper module. Much improved pulse spacing (still
> not as good as a dedicated external generator //Hint, hint Jon//). Pretty
> heavy overhead on the computer which tends to limit maximum step rate.

How heavy a load on the 'puter?
Right now, I'm running and AMD K6-2 400Mhz with 256Mb Ram.
You say not as good as an external generator.
So EMC is generating the step and direction pulses?
How would you use EMC if something else was generating them?

> smdromod.o : a modified version of freqmod.o that uses actual encoder
> feedback through a Mauch/Kulaga DRO card for closed loop stepper

operation.

I'll hafta learn more about this after, I suppose.
Baby steps... (or is that a half-step?)

> stgmod.o : A true servo motion module for the Servo to GO card
>
> stg8mod.o : Another true servo motion module for the Servo to GO card. I
> think this one enables all 8 axis for robotic purposes.

Both of these are above my price and knowledge level right now, I think...

> emcmotsim : A simulator version

Sim for what?

> I think there is actually another servo version for the version 2 STG

card.

Thanks for answering all my questions.
And I'll keep my posts to refer to in helping you with the handbook.

Weyland