The HEIDENHAIN HR 1120 handwheel, despite its compact construction, is built to be used for both portable and stationary housings. Its mechanical detent of 100 positions per revolution allows for accurate motion control. The model can be connected to standard programmable logic controllers (PLC) and PC slot cards, due to its electrical output at TTL levels with differential signals in accordance to RS 422.
HR 1120 handwheels cannot be connected to controls from HEIDENHAIN with expanded interface functions.