Can't get lathe to Feed

rider-83 wrote:

Andy,

Ref: encoder.N.missing-teeth

My encoder disc has 100 slots. Should I blank out two slots and use this method?
Do we leave the 'scale' still set at 100 ?

I have added my config and pics of the Boxford 125

forum.linuxcnc.org/38-general-linuxcnc-q...ved?start=110#217847

rider-83 wrote:

My encoder disc has 100 slots. Should I blank out two slots and use this method?
Do we leave the 'scale' still set at 100 ?

Yes, the scale still stays at however many teeth there would be. 
You can blank out one or more teeth. 

My thoughts were to blank out two teeth with epoxy, but I'm unsure how to set up this 'missing-teeth'. Is this only available to ver2.9 ?

rider-83 wrote:

My thoughts were to blank out two teeth with epoxy, but I'm unsure how to set up this 'missing-teeth'. Is this only available to ver2.9 ?

I think that I would start with tape if it is an optical sensor. If it is inductive then neither tape nor epoxy will work. 

Missing-tooth index is, indeed, only available with 2.9. (though it would work with 2.8 if you compiled it for 2. 

Setup is as simple as connecting just channel-A and using a "setp" in the HAL file to set the number of missing teeth. 
 

Tape is a good idea. Ta.

Does this look correct?

Swap:
net pulse-index-combined parport.1.pin-10-in encoder.0.phase-A encoder.0.phase-Z

for
net pulse-index-combined parport.1.pin-10-in encoder.0.phase-A
setp encoder.0.missing-teeth 2

Yes, looks right.

parameter or pin'encoder.0.missing-teeth 2' not found

Hmmm, I think I've done something wrong

Are you using LinuxCNC 2.9?

Yes,
I installed some months back for the use of the G71