Hello!
I have cnc lathe Hyundai HIT-200M, it's on Sinumerik 840D.
I have to make turret reference, it's on Mitsubishi MRJ2S-100A servodriver, turret have absolute encoder so there's battery for hold on memory of zero position.
But battery was broken, and i have alarm at mitsubishi AL.90 which means "Home position return incomplete".
Anyone know maybe how to make reference of turret at this machine?

Thank you and best rewards!