DEFHZ
if (rps_flag == RC_DEFAULT) rps = DEFHZ;
range_check(&rps, "rps", 1, 1000, DEFHZ, rps_flag);
long rps = DEFHZ; /* revolutions/second of drive */
rps = number(DEFHZ, "rps", 0);
rps = number(DEFHZ, "rps", 0);