UNIVERSAL HANDWHEELMR190 Universal Manual Pulse Generator Handwheel (MPG) offers both A/A’B/B’ differential line driver and A/B pull-up in a single unit. CNC manufacturers, control panel fabricators, distributors or service centers no longer need to stock three or more handwheel models because of the non-standardized interface requirements of different manufacturers and models of CNC systems, PLCs and teach pendants.