RE: Ini file

["Tim Goldstein" <timg-at-ktmarketing.com>]

A 133 is pretty anemic for running steppers with EMC. To get a smooth
output you need to use freqmod.o Unfortunately you need at least a 350
or better to get the task set fast enough to get good rapid speeds. With
a 133 you will be much better off running steppermod.o and accept that
you will have premature stalling as the ragged pulse train causes the
motors to instantaniously accelerate at some point.

Hate to be the bearer of bad news, but don't expect top performance on
that slow a box.

Tim
[Denver ,CO]


> -----Original Message-----
> From: emc-at-nist.gov [emc-at-nist.gov] On Behalf Of Kos
> Sent: Tuesday, March 26, 2002 11:29 PM
> To: Multiple recipients of list
> Subject: Ini file
> 
> 
> 
> Hi!
> I have installed BDI EMC 2.12 on P 133, 64Mb, 4Gb HD, S3 
> graphics, 800x600 256 colors, mouse LPT1. No modem or LAN.
> 
> I have four axis 2A bipolar L297/298 halfstep driver that is 
> proven with the motors on another DOS based system. I tried 
> to configure mini.ini by instructions given on CD by John 
> Sheahan and I posted a question to CAD_CAM_EDM_DRO list. I 
> received another clue from Paul (I believe he is the author 
> of BDI distribution?) which ini and run file to use together.
> 
> Unfortunately I am not getting anywhere. I can't get the 
> motors to run smooth and getting some torque out of them. 
> Well, I guess listers of this list must have some knowledge 
> about ini file structure.
> 
> The questions I have are:
> - velocity units used in ini file? (steps/second, steps/minute, ...?)
> - acceleration units ( ?!?)
> - deadband units? How do you know which value is correct?
> - ferror units? recommended value?
> If anyone has working INI / RUN combo for system described in 
> metric format it would be also nice for to see how it has 
> been done. BTW  EMC is my first encounter with linux... I 
> hope to learn more about it in next weeks...
> 
> I hope to get the EMC runnig in the near future so I can play 
> with my homebrew milling machine. Photos are available if 
> anyone interested.
> 
> Matjaz Kos
> 
> 
> 
> 
> 
>