Encoder question
- Tinker
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27 Aug 2026 15:51 #349053
by Tinker
Encoder question was created by Tinker
Good morning gents!!
I was wondering if a cheap amazon Incremental rotary encoder (5 wire including ground/shield) could be used for a 4th axis? I am using a Mesa 7i97T board and am experiencing so difficulty with it. I can see it count in Hal show but when i try to use it in real time it keeps erroring out...
Once again thank you to all the experts that make this possible!!!
I was wondering if a cheap amazon Incremental rotary encoder (5 wire including ground/shield) could be used for a 4th axis? I am using a Mesa 7i97T board and am experiencing so difficulty with it. I can see it count in Hal show but when i try to use it in real time it keeps erroring out...
Once again thank you to all the experts that make this possible!!!
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27 Aug 2026 16:07 #349054
by PCW
Replied by PCW on topic Encoder question
You can use single ended (5 wire) encoders with the 7I97/7I97T
as long as the three 7I97/7I97T encoder jumpers for the single ended
encoder are in the single ended/TTL positions (right hand position)
What error do you get?
as long as the three 7I97/7I97T encoder jumpers for the single ended
encoder are in the single ended/TTL positions (right hand position)
What error do you get?
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27 Aug 2026 16:17 #349055
by Tinker
Replied by Tinker on topic Encoder question
The 4th jerks when I enable the machine and i get a following error. The only way I can get it to work is if I enter a crazy high pulse count. It will rotate but with terrible accuracy, like 1 revolution shows a couple of degrees of rotation.
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27 Aug 2026 16:27 #349056
by Tinker
Replied by Tinker on topic Encoder question
I just checked and they are in the left hand position.... I'm going to swap them over and give it a try!! Thank you as always for your help.
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27 Aug 2026 16:37 #349057
by PCW
Replied by PCW on topic Encoder question
An immediate following error may also be because the feedback is backwards.
(if the encoder is scaled right and has the correct direction, you may need to
reverse the analog output polarity in the hal file)
(if the encoder is scaled right and has the correct direction, you may need to
reverse the analog output polarity in the hal file)
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