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Configuring LinuxCNC
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Advanced Configuration
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Incremental Encoder MMS
Incremental Encoder MMS
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23 May 2021 11:46 - 23 May 2021 11:47 #209895
by DC67
Hello
I installed an incremental
Encoder
for an MMS. After connecting it to the encoder of the MESA7i76e, I was able to call it up in the HAL show, but it doesn't count correctly. What do i have to change? see pictures + video
https://ibb.co/R3qc31r
https://ibb.co/CMSy7H9
Last edit: 23 May 2021 11:47 by
DC67.
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23 May 2021 13:05 #209903
by PCW
You have the encoder mis-wired, looks like
A --> A
/A --> B
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23 May 2021 16:08 #209918
by DC67
I couldn't find any fault now. Cabling from encoder to Mesa looks like this (pictures)
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23 May 2021 17:37 #209925
by PCW
Isn't pin D supposed to be the common?
Also make sure the7I76E encoder inputs are jumpered for single ended (TTL) mode
No pullup resistors are needed in single ended mode (they are built into the 7I76E)
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23 May 2021 17:55 - 23 May 2021 17:56 #209931
by DC67
this is the circuit diagram. did i make a mistake here?
Last edit: 23 May 2021 17:56 by
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23 May 2021 18:22 #209934
by DC67
sorry i had overlooked that when drawing in the cable that the blue cable in the photo from the MESA (ground) is connected to pin D.
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23 May 2021 19:13 #209942
by DC67
I have now removed the resistors that I would not have needed at all, as I found out, the jumpers were already on TTL. Then I turned the rotary encoder again only in one direction (to the right). You can see that it counts from 0 to -1 and then +1 in the video. He then always repeats the whole thing.
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Configuring LinuxCNC
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Advanced Configuration
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Incremental Encoder MMS
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