RE: [CAD_CAM_EDM_DRO] he's nearing completion! EMC and 4th axis

Full pinout for EMC is on my site (probably else ware also?)
www.ktmarketing.com/CNC.html 5th link from the top labeled "Parallel Port
Hookup to Controller".
Just looked at the page and the motors are labeled in the same manner as the
axis's starting at 0 so motor 3 is the 4th axis.

Follow errors in freqmod are primarily cured with an increase in your P
value. I would also guess that if you can decrease your PERIOD setting that
would help as the jumps between speeds would be lessened at any give range.


Tim
[Denver, CO]

> -----Original Message-----
> From: whollid1@... [mailto:whollid1@...]
> Sent: Tuesday, October 16, 2001 8:19 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] he's nearing completion! EMC and 4th axis
>
>
> Thanks a gazillion to all the help with my laundry list of emc
> questions but most of all thanks to ray. without the idiot proof
> advice and files i would be dead.
>
> Some last clean up questions but first a progress report:
> after installing the rpm's emc is perfectly stable, I have installed
> ray's tkemcx interface and it is awesome, my ini file is all ready
> for the fourth axis.
>
> But now, how do I point emc to the parallel port pins for the step
> and direction for the fourth axis. I have the 2nd parallel port, on
> 278 adress, in and properly configured but I dont know the pinout or
> how to modify the appropriate file to "aim " it correctly.
>
> I am still getting the "following error" at very high step rates (
> above ~ 8 revs per second at 400 steps per rev) I originally thought
> it was due to simply being at the max digital output of the port but
> I doubt that now because I can get 10 revs/sec if the axis is going
> in the negative without problem but in the positive direction it will
> error out at ~8 steps/sec.
>
> Thanks again
> Doc Holliday
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/