New Lathe build encoder index pulse stopped working

I have been designing and building a lathe cnc conversion and want it primarily for threading. I bought a cheap encoder 100ppr that has phase A, phase B and suppose to have an index but it stopped working right after I wired it in and was getting the spindle to work for spindle at speed.

Right now I have encoder.N.counter−mode true and the encoder pulses are reading fine for RPM.

My question is, can I use phase B as the index and scale it like I do the encoder? I don't really need quadrature, so if I could have the 100th pulse trigger the encoder.N.index−enable bit it would prevent needing to buy and install a new one right away. I will probably just buy a new one later on, but for the time being I wanted to keep setting up and testing.

hi
yes
first use a second encoder feed it with the B-Phase counts
you can use a cooperator to reset the encoder and set the Z-phase

as counter comp will be depreced in 2.8 dont use the counter

I can set encoder.N.counter−mode false, then point the encoder phase B parallel port pin => encoder.N.index-Z, but I am not sure what you mean by use cooperator to set phase.

I am picturing that the software would think that it was at the same index starting point and it could be at any of 100 different points around the encoder.

use a hall effect sensor or magnetic proximity switch as spindle index pulse.
Simple configuration.
I may work.
Moderators may correct me if I am wrong.

forum.linuxcnc.org/38-general-linuxcnc-q...card?start=10#138956

Danimal74 I think you should somehow only trigger the index-Z every <encoder-scale> pulses, should be once per revolution. There are some different ways to do that with hal components I suppose, thinking of div and mod math operators.

in some kind of pseudo-code should always give a signal once every turn no matter direction. But I couldn't find a "mod" hal component, so maybe not so easy to implement after all. SHould be no problem in a user component, but the complexity rises (by some).

Thanks for all the reply's. I just ordered another one and it will be here in a month. I put a cheap hall effect sensor on there for tuning.

We are hoping that you can continue with new encdoder.cheers