positioning unit for controlled stops can be mounted on any punching machine with 500 plus mm of open height. the unit consists of: mounting plate. set of two positioning carriages for the stops, driven by dc. motors. fa......positioning unit for controlled stops can be mounted on any punching machine with 500 plus mm of open height. the unit consists of: mounting plate. set of two positioning carriages for the stops, driven by dc. motors. fagor 102s control equipment or a control gekapro_pc windows based. set of independent servomotor drives on each axis, encoder pick-up. semi paxy semi automatic positioner, can be enlarged to 5,000 mm. on the x axis.