On Mon, 9 Sep 2013 at 14:48, Rudy du Preez wrote:
> I am busy converting a Motorman 6-axis robot to Linuxcnc. The original
> Yaskawa motors and servo drives are used. The motors are all fitted with
> absolute encoders. The encoders have ..
>
Hi Rudy
I know this is a while back, but
Quote: "Peter C. Wallace"
snip -
Well... Thats not entirely true, the muxed data serial can be recovered just
like the muxed encoder data is. 9600 baud is so slow that the muliplexing will
cause minimal distortion (it will be sampled at 4 MHz so something like 400
samples/bit time)
So _it i
Run physical signal to two pins? Encoder & gpio. Encoder wont care about
extra twiddling at start (and you're going to reset its counter anyway).
Gpio (uart) doesn't care if you ignore its output later.
SMD
On Tue, Sep 10, 2013 at 1:50 PM, Rudy du Preez wrote:
> I now realize that the A phas
On 10 September 2013 21:09, Greg Bentzinger wrote:
> Remember this serial input will be needed for every joint/servo drive.
>
> That is several serial channels if they need to be read all at once. Otherwise
> you will need some form of switching unit to feed each channel as you
> 'home/read home
On Tue, 10 Sep 2013, Rudy du Preez wrote:
> Date: Tue, 10 Sep 2013 19:50:53 +0200
> From: Rudy du Preez
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] Motorman Robot with absolute Yaskawa enco
I now realize that the A phase cannot go through the counter in the firmware
of the 6i25+7i77 setup and then read serial data.
Would it be easier to use a 5i20 + 7i33 combination. Then modify the
firmware so under some control input bit the A phase is first passed through
by-passing the counter, s
On Mon, 9 Sep 2013, Rudy du Preez wrote:
> Date: Mon, 9 Sep 2013 14:28:25 +0200
> From: Rudy du Preez
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] Motorman Robot with absolute Yaskawa encoders
On 9 September 2013 13:28, Rudy du Preez wrote:
> The encoders have differential A and B pulse trains, but
> the A channel is used in the beginning to send 8 bytes of serial data plus
> some incremental pulses to establish the absolute positions of the axes when
> activating the robot after a star
I am busy converting a Motorman 6-axis robot to Linuxcnc. The original
Yaskawa motors and servo drives are used. The motors are all fitted with
absolute encoders. The encoders have differential A and B pulse trains, but
the A channel is used in the beginning to send 8 bytes of serial data plus
some
