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- single ended TTL versus differential quadrature encoder counts
single ended TTL versus differential quadrature encoder counts
- smc.collins
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09 Jun 2022 20:05 #244815
by smc.collins
when setting up the spindle encoder, if the encoder is TTL pushpull and my encoder is 4096 ppr, the calculator shows a 4x of the of the count, is that specific to differential encoders or to all quadrature encoders, I searched and got a answer that was, muddy at best. As the other encoder are 4096 ppr TTL single ended, when I go to configure those axis, I want to make sure my math is correct.
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09 Jun 2022 21:23 - 09 Jun 2022 21:23 #244821
by PCW
Replied by PCW on topic single ended TTL versus differential quadrature encoder counts
The 4X is for all quadrature counters TTL or differential.
This is because quadrature counters normally count on all 4 edges
( Rising and falling edges of A and B )
The TTL or differential connection just refers to the electrical
specifications of the encoder interface.
MPG counters sometimes use 1X mode so they end up with 1 count per
detent with 100 PPR encoders.
This is because quadrature counters normally count on all 4 edges
( Rising and falling edges of A and B )
The TTL or differential connection just refers to the electrical
specifications of the encoder interface.
MPG counters sometimes use 1X mode so they end up with 1 count per
detent with 100 PPR encoders.
Last edit: 09 Jun 2022 21:23 by PCW.
The following user(s) said Thank You: smc.collins
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10 Jun 2022 01:55 #244842
by smc.collins
Replied by smc.collins on topic single ended TTL versus differential quadrature encoder counts
I thought that was how it read in the documentation, Thanks.
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- Configuring LinuxCNC
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