On Fri, 6 Dec 2024, Leonardo Marsaglia wrote:
Date: Fri, 6 Dec 2024 09:02:50 -0300
From: Leonardo Marsaglia <ldmarsag...@gmail.com>
Reply-To: "Enhanced Machine Controller (EMC)"
<emc-users@lists.sourceforge.net>
To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
Subject: Re: [Emc-users] Question about mesa 7i53
Hi Peter,
A 7I89 with all encoders having only 'A' pins
would give you 24 channels of frequency counters
if thats whats required. You could also have a
mix of normal encoders for normal motion use
and 'A' only ones used just for frequency
counting.
That would be a really nice solution. I could use a 7i80DB (I'm not sure
the 7i92 can be connected to the 7i89) to interface with the 7i89.
Just checked and a 7I92 will just fit 24 encoder counters + 1 sserial channel
with a 7I89, but nothing else. So for a full configuration with one FPGA card,
and 24 frequency counter channels, you would need a larger FPGA
(7I80DB,7I76E,7I92T,7I96S etc)
Peter Wallace
Mesa Electronics
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