Hi

I've been trying to configure my lathe for threading and I think I'm 
missing something.
I have the 5i20+7i33 mesa card + servos + 100 lines encoder attached to 
the spindle

The threading are incorrect, so I've been looking to what can be wrong, 
and I find that the "motion.spindle-revs" not correspond with the reality.
When there is only 1 to 5 revolution the value is almost correct, but 
when the spindle rotated more than 50 revolution the gaps between the 
read value and real is increased.

So I would think that making rigid tapping it would work, but not for 
multi-pass threading because the increasing error.

I think that my .hal file in not properly done, I miss something. So I 
ask for help please!

Thanks a lot
Arnoldo Riter




Here is the block I added in order to make threading, but I doesn't work 
properly!!
#### 100-line encoder gives 400 pulses per rev###
setp m5i20.0.enc-03-scale 400
net spindle-pos m5i20.0.enc-03-position
net spindle-pos motion.spindle-revs
net spindle-index-en motion.spindle-index-enable
net spindle-index-en m5i20.0.enc-03-index-enable

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