Incremental encoders with 9411 in scan mode

Hi.

I developped a project to control a plant using a controller NI9067 working in scan mode. Among the devices there is a NI 9411 to acquire pulses from incrmental encoders, so I have just chA and chB from encoder, no Z index, and i need to reset position in order to have the right reading of position. In Specialty Digital Configuration of 9411, the Quadrature function is performed for encoders with A, B and Z index. But I dont have Z index, so how to wire encoders signal to board and how to perform the reset operation?

Attached the vi I developped not in rt target to calculate position and reset procedure

Thank yo for your help