On Fri, 7 Aug 2020, Thaddeus Waldner wrote:
Date: Fri, 7 Aug 2020 13:07:04 -0500
From: Thaddeus Waldner <thadw...@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] 7i73 Lagging jog key
I finally got to do a little troubleshooting and here??s what I found:
Key response on the keypad is never as fast as the on-screen UI but it is
consistent. I??m guessing there??s about a 100-300 ms delay but that??s just a
guess. Could this delay be due to the fact that this is a scanning keypad? What
is the scan rate on
Once the inverter starts, I get a LOT of noise on the SmartSerial lines. The
noise voltage is around 4v as measured from the 7i73 ground but it spikes to
higher than that. Frequency is about 40khz but it??s not consistent.
The noise on the 5v power supply line to the 7i73 is minimal. The 7i73 and all
its connected switches are grounded only through the board??s connection to the
7i96 board.
Would a shielded ethernet cable help?
On Jul 31, 2020, at 9:17 AM, andy pugh <bodge...@gmail.com> wrote:
On Fri, 31 Jul 2020 at 15:15, Peter C. Wallace <p...@mesanet.com> wrote:
Also even with default sserial error management you could only have
10 servo thread cycles (10 ms with a 1 ms servo thread) of delay
due to failed transactions before a sserial error popup would occur.
Maybe noise on the keyboard itself? Is the keycode pin a single clean
transition?
--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
?? George Fitch, Atlanta Constitution Newspaper, 1912
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4V of noise should be OK (its within the common mode range of the differential
recievers which is -7 to +12V ) as long as you do not get sserial errors I dont
think this is the cause of your delays. You can see if you get _any_ sserial
errors by setting the error threshold to 1
Peter Wallace
Mesa Electronics
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