Bugs item #2924185, was opened at 2009-12-31 08:20
Message generated for change (Settings changed) made by jepler
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Category: Stepconf
Group: None
>Status: Closed
>Resolution: Fixed
Priority: 5
Private: No
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: wrong BASE_PERIOD in "test axis" dialog

Initial Comment:
If step lenght > 5.000, I found a wrong timing of the base_thread.
e.g. step len = 20.000, jitter = 20000 results in min base_period = 40.000, max 
freq = 12.500 Hz displayed on the first page of Stepconf.
This is correct.
But when I do the "test axis" dialog and measure the pulses with a scope, the 
base_period is approx. 53.000.
The base_period performes well, when steplen <= 5000 is used.
When export ini+hal and use EMC (2.3.4), the base_period is also fine.

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>Comment By: Jeff Epler (jepler)
Date: 2010-03-09 07:23

Message:
Thank you for the patch.  The version you posted on the mailing list has
been applied to the v2.4_branch and will be in emc 2.4.0 when it is
released.

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Comment By: https://www.google.com/accounts ()
Date: 2010-01-01 05:10

Message:
I think I found the complete solution for this and the previous item:

1980,1983c1980
<         if data.doublestep():
<             period = int(1e9 / maxvel / scale)
<         else:
<             period = int(0.5e9 / maxvel / scale)
---
>         period = int(1e9 / maxvel / scale)
1992,1995c1989
<             if data.doublestep():
<                 maxvel = 1e9 / minperiod / abs(scale)
<             else:
<                 maxvel = 0.5e9 / minperiod / abs(scale)
---
>             maxvel = 1e9 / minperiod / abs(scale)

regards, Gerd


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Comment By: Nobody/Anonymous (nobody)
Date: 2009-12-31 08:23

Message:
shall be in Category Stepconf

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=106744&aid=2924185&group_id=6744

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