Jon,
I may have some info on these encoders at work. I'll look
tomorrow. We use some of the Beta stuff on our newer machines.
Dave Keeton
Technical Services Manager
The Eagle Tool & Machine Co.
Springfield, Ohio
--------------------------------------------------
From: "Jon Elson" <[email protected]>
Sent: Monday, March 22, 2010 12:53 PM
To: "Enhanced Machine Controller (EMC)" <[email protected]>
Subject: [Emc-users] Fanuc serial encoders, (try 2)
> (Sorry, I tried to be cute and put Greek Beta symbols in my message,
> didn't work)
>
> With all this talk about serial encoders, does anyone know anything
> about Fanuc serial encoders? I've been looking for the protocol specs
> all weekend with no luck. It seems they have a VERY large number of
> motors out there in the later "red cap" series, the encoder is called
> the B128ia. It has 128K counts/rev (131072). There is also a 64K count
> version. It is an absolute encoder, and retains index alignment for 10
> minutes when unpowered. The closest thing I found was a patent
> document, but it was not specific enough about the format.
>
> Anyway, motors from the Bis series use this encoder. Some typical
> motors are the A06B-0078-B003, which has encoder model A860-2020-T301.
> (In these series designations the capital B should really be a Greek
> Beta character.)
>
> Thanks in advance for any help anyone can offer.
>
> Jon
>
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