Hardinge Conquest 42, Fanuc OT-B control. Whenever I power up, it demands a turret return. No big deal, until lately the turret just spins forever. I stop it, line it up on #1 by hand, lock it down, and clear all alarms, and it goes on like it was homed. I suspect the Hall effect device on the turret index plate (LS21 - Turret Reference) . Does anybody know what diagnostic address and bit number is associated with this switch? For instance, when the turret clamps and unclamps, diag # 20.1 changes state to let me know that sensor is working. Which one is for LS21?