Head unit (for SL700)
Output : Serial of each company

PL101-RM / RP / RY

Head unit (for SL110 / SL130)
Output : A/B quadrature

PL81/PL82

Head unit (for SL110 / SL130)
Output : Interpolator MJ100 / MJ110

PL25

Head unit (for SL110 / SL130)
Output : Counter LG20 / LH70 / LH71 / LH71A / LH72 / LY71 / LY72

PL20C

Head unit (for SL331)
Output : Interpolator MJ100 / MJ110

PL60

Interpolator (for PL25 / PL60)
Output : A/B quadrature, Reference point

MJ100/MJ110