On Tue, 22 Dec 2015, Marius Alksnys wrote:
Date: Tue, 22 Dec 2015 06:01:24 +0200
From: Marius Alksnys <[email protected]>
Reply-To: "Enhanced Machine Controller (EMC)"
<[email protected]>
To: [email protected]
Subject: Re: [Emc-users] Mesa 7i77 encoder max count rate
Yes, filter was the first thing I tried. And it does not change max
count rate at this setup. I tried to play with muxed-count-rate, but
could not raise it more than 16666666. When I tried some bigger number -
the system just hang =|
changing the mux rate should not be able make the system hang (though if too
fast it may scramble all the encoder counts vaues)
If the filter-rate setting does not change the maximum count rate,
the count rate limitation is not the 7I77 but something external
(possible the converter or the interface)
I could not find how to change the skew while I found this mentioned in
forums. I am using standard Mesa cable, but can make shorter one, about
400mm length.
The skew setting HAL pin is only exposed with version 4 encoder counters
12/22/2015 05:41 AM, Peter C. Wallace ra????:
...
Did you try turning off the encoder filter bit?
The limitation is because the 7I77 encoders are muxed. You can push up the mux
rate with rev 4 encoders because they allow adjusting the multiplexing skew
(from cable delays and switching times)
------------------------------------------------------------------------------
_______________________________________________
Emc-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/emc-users
Peter Wallace
Mesa Electronics
(\__/)
(='.'=) This is Bunny. Copy and paste bunny into your
(")_(") signature to help him gain world domination.
------------------------------------------------------------------------------
_______________________________________________
Emc-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/emc-users
