homing using servo index

Hello, I'm wondering if there is a way I can use my existing hardware to use index signal homing. I have a mesa 7i76e with Dmm servos and Dyn2 drives. There is an output on pin 10 for this.

Dyn2 JP3 I/O Port
Pin 1: GND (Bottom side of drive)
Pin 2: Analog Command Reference ±10VDC
Pin 3: DIR-, B-, CCW- Pulse Reference
Pin 4: DIR+, B+, CCW+ Pulse Reference
Pin 5: STEP-, A-, CW- Pulse Reference
Pin 6: STEP+, A+, CW+ Pulse Reference
Pin 7: Signal Common for Pin. 8, 9, 10, 11.
Pin 8: Alarm Output
Pin 9: OnPosition Output
Pin 10: Absolute Zero Position Index Output
Pin 11: Drive Disable Input
Pin 12: Drive Internal +5VDC Supply (Top side of drive nearest to JP5

thanks

It should be possible if there is a way to connect the index output to
a high speed 7I76E input and you use linuxCNC master which has support for
index on step/dir systems

Ok thanks. I have master but not sure which input would be a high speed on the 7i76 or are you thinking of a signal converter? That said I'm wondering if this is a good approach in practice? I read an older post on the forum about storing a pre-calibrated homing value and recalling presumably by the homing cycle.

thanks

Yes ,you could use the encoder inputs to test this.

If the encoder is needed for a spindle, you would
need to use the expansion ports for index input
but these inputs need buffering or protection from
direct exposure to servo drive connections which
tend to have a lot of noise spikes.

Mesa has the 7I75 Breakout board that has buffering and protection. Would that work without to much configuration or maybe just going with a 7I85 will be simpler?

thanks

You could use a 7I75 if the index is a 5V signal

Yes the index signal is +5v and it's recommended to use the falling edge signal. Will the 7i75 still work?

thanks