Re: servotogo-problems

Jan wrote:

> Hello all,
>
> A brand New year and yet new problems.
>
> Due to an improper grounding I ruined my encoder card of my machine, this card gave me trough a driver-IC the proper quadrature signals for a servotogo 8 axis board and it worked. So I changed this card and tough that I was punished enough. But Emc still doesn't read my encoders, still with the software provided with the board I see that the encoder signals are read? Even better I found in /plat/linux/stgdiag this seems to read the encoder signals, in the release of 17 Sept (compiled with no errors) there is nothing read, in the release of 16 Nov (compiled with errors in emcmot) the encoders are read?
> So what I'm wondering now is my board broken? Or can we make trough the inifile (the only one I change) changes for reading the encoders and so do I miss some settings?

Twice I have had a situation where EMC would not read the encoders. It persisted even through a
power down, and restart of Linux and EMC. I then brought Linux down and booted DOS, and
ran the STG diagnostics, and all was well. (Hmmm, strange.) Then, I rebooted Linux and ran
EMC, and all was well there, too! (Stranger, still!) Finally, I powered down and back up, and
all was still well! (Very strange problem, indeed!)

So, there may be an unitialized register, or some other foolishness, maybe plug-n-play
problems, who knows? Anyway, at least Fred Proctor and Matt Shaver have also seen
this behavior at least once, each, if I recall.

You might try the 20-Dec-1999 release. That is what I'm now running. Anyway, the fact
that behavior changes depending on what software you are running points to software
trouble, not hardware.

Jon