Jeff,

I can remember discussing with you the pluto-p a few years back on EMC IRC
channel. BTW do you get on there much these days?

As a sugestion it may be wise to have a caveat explaining the short comming
of the pluto-p card as say a readme as part of forth comming releases. I
spent a week with my head wrapped in this problem which could have been
avoided ;-) Though it has taught me more about EMC than I would have learnt
otherwise, so thats not such a bad thing :-)

Cheers,
Steve

On Fri, Oct 15, 2010 at 4:00 PM, srgpip <srg...@googlemail.com> wrote:

> Thanks for the replys Guys! :-)
> That would explain things.
> I was using the debug print commands and when moving the Y axis with 3 axis
> enabled I was getting a different number return on PPDATA then I was with
> the Z and X which were the same.
>
> Z, X returned 64511 and so did Y positive move.
> Y negative returned 62463!
>
> Another issue could be that the pluto-p card I had was bad all along!
> It wont communicate at all now with EMC.
> It loads the firmware but when going into EPP mode communication fails.
> The folks at fpga4fun have kindly sent out a new card which is currently in
> transit.
>
> In the meantime I purchased a 7i43 card from Mesa which is also in transit
> from the States.
>
> BTW The pluto-p card was connected directly to the port for all tests.
>
> On another note with regards to the maillist it seems I do not receive the
> posts that I send but I do receive replys. I am using google mail does
> anyone know the reason for this as it can be quite frustrating.
>
> Kind Regards,
> SRG
>
>
> On Fri, Oct 15, 2010 at 3:37 PM, Andy Pugh <a...@andypugh.fsnet.co.uk>wrote:
>
>> On 15 October 2010 15:09, Chris Radek <ch...@timeguy.com> wrote:
>>
>> > I suspect you might be seeing corruption of the EPP communication, and
>> > not a driver bug.
>>
>> I missed that the stepgen feedback written by the driver depends on
>> data read back from the Pluto. It does seem plausible that it could be
>> a problem there.
>>
>> It's a pity that the OP already as the Pluto, a Mesa 7i43 is only $20
>> more for vastly more capability.
>>
>> --
>> atp
>>
>>
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