Encoder Issues, Help!

BigJohnT
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Administrator

15 Jan 2016 22:38 #68499 by BigJohnT

Replied by BigJohnT on topic Encoder Issues, Help!

csbrady wrote:
I at last figured out the problem. It's a bit embarrassing, but the problem was my measurement setup. I was using a dial indicator on a test stand with a magnetic base. I thought that the results were too consistent to be the test setup so I dismissed that as a possibility. With nothing better to do I made a couple shallow cuts 5" apart and measured them. 5.000" exactly, hooray!!

Thanks everyone for the help and sorry for the wasted time on a dumb mistake.

You are in the unique position to help the next person that has this problem.

JT

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HalaszAttila
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Premium Member

11 Feb 2020 12:43 - 11 Feb 2020 12:43 #157042 by HalaszAttila

Replied by HalaszAttila on topic Encoder Issues, Help!

Hello,

where can i find this pin:
- quadrature-error.enable
this pin tell me, if some problem is with encoder differential input? Or just check the A - B signal difference?

Last edit: 11 Feb 2020 12:43 by HalaszAttila.

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PCW
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Moderator

11 Feb 2020 12:49 #157043 by PCW

Replied by PCW on topic Encoder Issues, Help!

It indicates a error in the quadrature protocol (A,B change at the same time)
You may need updated firmware (and LinuxCNC 2.8) for this to work properly
(there was a driver bug and a firmware bug in older firmware so that the error reporting was not reliable)

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