10. Options5810.4 Reversed-home SpecificationIn the reversed-home specification, the home is located on the front side. This is indicated by “NM” in the modelnumber. If you wish to change the home direction after the delivery, consult IAI because the moving directionparameter must be adjusted, as well as the encoder’s Z-phase on certain models.10.5 Cable Exit DirectionThe cable should exit in one of the following four10.6 Guide with Ball Retention MechanismA spacer (retainer) is inserted between adjacent balls (steel balls) in the guide to reduce noise and achievesmooth operation. This specification is indicated by “RT” in the model number.There is no longer metal noise generated by colliding balls and thus noise is reduced. Since balls are aligned byretainers, annoying noise decreases. Wear caused by friction between balls decreases, oil no longer runs out dueto contact, and lubricating oil collects at the retainers. Accordingly, operation becomes smooth.BallCable exit from the back onthe right(Option model number: A3E)Cable exit from the right(Option model number: A3S)Cable exit from the back onthe left(Option model number: A1E)Cable exit from the left(Option model number: A1S)CableCableCableCableBall Spacer (retainer)