On Thu, 21 May 2020, andrew beck wrote:

Date: Thu, 21 May 2020 13:38:08 +1200
From: andrew beck <andrewbeck0...@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] mesa 7i76 spindle encoder not counting suddenly

thanks for the reply PCW

hey is that different to just checking the raw count in Hal?

Yes because you can tell which of A or B is not working

what pin am I looking for?  and can I monitor it from the Hal configuration
window?

hm2_7i76e.0.encoder.00.input-a
hm2_7i76e.0.encoder.00.input-b




regards

Andrew

On Thu, May 21, 2020 at 1:36 PM Peter C. Wallace <p...@mesanet.com> wrote:

On Thu, 21 May 2020, andy pugh wrote:

>> Date: Thu, 21 May 2020 02:21:02 +0100
>> From: andy pugh <bodge...@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] mesa 7i76 spindle encoder not counting suddenly
>>
>> On Thu, 21 May 2020 at 02:14, andrew beck <andrewbeck0...@gmail.com>
wrote:

>> I am wired up with differential twisted pairs.

>That's a good start.

>> also the 5i25 is connected powering the 7i76 spindle encoder power
which I
>> am using (I don't have a external 5v powersupply.

>If you put a multimeter on the A+ / A- and B+ / B- pairs at the 7i76
>termianls and turn the encoder slowly, what do you see?

>(also check that all wires are in the clamp. not under the clamp...)


You should also be able to tell whether A or B is not changing
by looking at the encoder A,B pins in hal


--
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, 191


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Peter Wallace
Mesa Electronics

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