Spindle orientation

Hi gang, So as the title suggests I'm wanting to know the best way to orient my spindle. My spindle motor is controlled by step/dir (its a giant ac servo)it has DI and OUT for spindle orient start, spindle orient complete as well as encoder out. how would this best be implemented into linuxcnc? I'm trying to use the least amount of io as I can (I'm running out) Thanks 

i have nothing working as yet, the ratio is 1:1

this is what i have tried.
# Spindle Orient Command from LinuxCNC to the driver
net spindle-orient motion.spindle-orient => hm2_7i95.0.ssr.00.out-05

# Spindle Orient Complete feedback from the spindle driver
net spindle-orient-done hm2_7i95.0.inmux.00.input-06 => motion.spindle-orient.is-oriented

just to clarify my spindle driver has inputs and outputs for orient start and orient completed

Please try this configuration to orient with servo step/dir, it works for me.

Thanks for the reply, I managed to get it to work with just two hal commands, my spindle and driver have inputs and outputs for doing this without using the encoder through linuxcnc.