There you go!
JT
On 6/30/2021 2:53 PM, Peter C. Wallace wrote:
On Wed, 30 Jun 2021, Chris Morley wrote:
Date: Wed, 30 Jun 2021 19:37:30 +0000
From: Chris Morley <chrisinnana...@hotmail.com>
Reply-To: EMC developers <emc-developers@lists.sourceforge.net>
To: EMC developers <emc-developers@lists.sourceforge.net>
Subject: Re: [Emc-developers] Pncconf Step Timing Limit
Yes... what limit do you think is reasonable?
Chris
I would think 50 usec would be ok for the slowest hardware
The stepgen firmware has a limit of ~164 usec for all timings
-------- Original message --------
From: John <j...@gnipsel.com>
Date: 2021-06-30 7:49 a.m. (GMT-08:00)
To: emc-developers@lists.sourceforge.net
Subject: [Emc-developers] Pncconf Step Timing Limit
Hi Chris,
Can you increase the step timing to > 12,000?
"When I was using the parallel port, the step and hold were 12000 and
3500. The software maxes this out at 10000 for the 7i92 so I used that
instead of 12000.
X axis will move, but NOT very smoothly. Y and Z do not move at all.
All 3 axis are identical, with the exception of the length of the
leadscrew (china cnc3040 machine). Same motor, same leadscrew pitch,
same wiring, etc. The motor driver is a TB6560 (not great, but works
fine for my tinkering)."
After advising the chap to edit the ini file and set the step timing
where he needed for his drives.
"Ok, I finally have 3 axis working smoothly. Editing the ini file and
playing with the step and hold times did the trick.
My apologies for being a little cranky, but I was working on it all last
week and into the weekend and was just hitting the brick wall. I had
assumed that the PncConf was showing the true max limits (step/hold) of
the card, so I didn't think there was anything else to be done."
Thanks
JT
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Peter Wallace
Mesa Electronics
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